| Although anglesite and cerussite are found at Loudville, the two most sought-after minerals are pyromorphite and wulfenite. |
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| Thin-section analysis shows that the minerals forming the magmatic foliation do not show any signs of deformation or recrystallization. |
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| Groundwater will contain the minerals dissolved as the water moves through soil and rock materials. |
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| For digital photography, SoLux bulbs are perfect, yielding accurate rendition of difficult-to-photograph minerals such as dioptase and azurite. |
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| The alternating bands of mafic and felsic minerals are a striking and distinctive feature of all gneisses. |
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| A second element, tantalum, is always present in these minerals along with niobium. |
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| Chewy tender arame, the mildest of sea vegetables, supplies dietary fiber and a wealth of vitamins and minerals. |
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| It is found in more than 800 different minerals, the most important of which are thortveitite and wolframite. |
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| The main minerals identified were mainly calcite also some diopside, wollastonite, iron oxides and a few scattered dolomite crystals. |
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| This method relies on the ability of gas bubbles, which are rising through an aqueous solution, to trap certain minerals. |
|
| In addition, fruit juices are rich in essential minerals like iron, copper, potassium, sodium, iodine and magnesium. |
|
| Bacterial redox reactions with minerals are already being exploited in mining low grade or inaccessible ores. |
|
| But the same would be likely to apply to inert waste deposited at the County's exhausted minerals workings or landfill sites. |
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| Serpentine is a secondary mineral, a magnesian silicate, formed from minerals such as olivine and orthopyroxene. |
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| As water moves through soil and rock, it dissolves very small amounts of minerals and holds them in solution. |
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| Many of the world's finest specimens of native copper, azurite, malachite, atacamite, and a host of other minerals originated in this manner. |
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| Other accessory minerals are apatite, zircon, monazite, huttonite and rare xenotime, uraninite and betafite. |
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| Additional studies will determine if the rocks were laid down by minerals formed at the bottom of a salty lake or sea. |
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| The leaf of the aloe plant contains 12 different vitamins and 20 different minerals as part of its 200 active compounds. |
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| Other secondary copper minerals associated with the chrysocolla are malachite, cuprite, and tenorite. |
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|
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| Food additives perform many valuable functions like increasing flavor, adding extra minerals or other nutrients, and retarding spoilage. |
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| Helium, a light gas, is formed during radioactive alpha decay in rock minerals. |
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| It consisted of an excellent party with the most scrumptious food, fruit and minerals, tea and all sorts of goodies served. |
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| In carbonate-rich soils, rapid neutralization of rainwater by carbonate minerals restricts the mobilization of aluminosilicates and oxides. |
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| This combination of minerals is one of Colorado's well-known lapidary materials, for it has long been cut and polished and used in jewelry. |
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| Could the magmatic conditions at depth allow argon to be occluded within the minerals at the time of their formation? |
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| I also used to always be attracted to certain types of minerals and gems, primarily quartz and amethyst. |
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| There are more than eighty different natural zeolite minerals and many hundreds of synthetic zeolites with no naturally occurring equivalents. |
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| In the 1970s and 1980s collectors and dealers reported on the zeolites and associated minerals from the Deccan Traps. |
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| The junction pockets are commonly lined with quartz and calcite upon which zeolites and associated minerals crystallize. |
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| He had a wide interest in minerals but specialized in zeolites and published many locality discoveries. |
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| The natural zeolitic minerals, composed of aluminum and silicon, are a billion-dollar-a-year industry. |
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| If, after the lava has cooled and set, the vesicles are filled with minerals, they are known as amygdales. |
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| These minerals occur in amygdaloidal cavities and in nodules in intermediate composition volcanic rocks of the Conejos Formation. |
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| Bison meat contains many minerals but is highest in selenium, zinc, phosphorus, iron, copper and magnesium content. |
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| Even resistant minerals such as zircon have been found to be etched by bacteria. |
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| The aluminium silicate minerals andalusite, kyanite, and sillimanite are good examples of this phenomenon of polymorphism. |
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| Monazite clusters occur in a variety of host minerals, including cordierite, quartz, biotite and andalusite. |
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| Associated minerals include various pyroxenes and zeolites in addition to the more familiar lazurite, sodalite, pyrite, and carbonates. |
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| Soluble minerals are leached from soils on upper slopes, move down the slope, and are often deposited at the foot of the slope. |
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|
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| Africa, though endowed with a wealth of minerals and other resources, is the poorest continent in the world. |
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| So far we have been fighting for land, water, minerals and other resources. |
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| It occurs in millimeter-sized anhedral grains or as bronze-colored hairlike crystals intimately intergrown with the oxide minerals. |
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| In particular, in most of the eastern part of the complex, mafic minerals are very uncommon. |
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| All kinds of manures have minerals in them and organic farmers also use other minerals like chalk or rock phosphate. |
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| The orebody contained an exotic suite of minerals, including mercury, tennantite, and tetradymite, all of no commercial value. |
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| Among the products that were marketed were emeralds, tourmalines, aquamarine, amethyst, citrini and industrial minerals such as talc and lime. |
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| Here, spectacularly large groups of scolecite, heulandite, apophyllite, and associated minerals occurred in cavities in flood basalt. |
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| The minerals are passed on in a sperm packet during mating, to enrich the eggs. |
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| Although many studies involving quercetin are still in the test-tube phase, onions are still a good source of vitamins and minerals. |
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| Associated minerals are olivenite, chalcophyllite, clinoclase, comwallite, strashimirite, malachite, azurite, and cuprite. |
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| Instead, they use sea minerals extracted from marine plants to reduce dimpling and improve skin tone. |
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| Soft water, on the other hand, may taste salty because sodium salts are often used to rid the hard water of minerals. |
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| Garnets and schorl are the most likely collectible minerals to be encountered. |
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| I make up a cocktail of vitamins and minerals and feed this to the shrimps. |
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| Sprays of black schorl in quartz are some of its most sought-after minerals. |
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| The plagioclase feldspar weathers to produce a whitish gray rock, while the mafic minerals produce contrasting darker grains. |
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| Whole grains are also important sources of vitamins and minerals, such as thiamin, riboflavin, niacin, folate, selenium, zinc and iron. |
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| Associated minerals are azurite, quartz, plancheite, cerussite, and mottramite. |
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| Gilman pyrites typically have associated minerals, particularly flattened siderite rhombohedra and marmatite. |
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|
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| The geosphere is the Earth itself, the rocks, minerals, and landforms of the surface as well as its interior. |
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| The serpentine minerals antigorite and lizardite are clay-like constituents of tremolitic talc. |
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| Lepidolite, beryl, tantalite, quartz crystals, and altered and unaltered petalite are some of the minerals that can be found in this district. |
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| The result can be some of our most spectacular minerals, including azurite, malachite, smithsonite, wulfenite, pyromorphite, and mimetite. |
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| These contain veins of supergene copper minerals, mostly azurite and malachite. |
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| Serpentine is a common name for the minerals antigorite, lizardite and chrysotile. |
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| Other minerals mentioned from the mine by Dunham include galena, sphalerite, pyrite, chalcedony, and minor marcasite and pyrrhotite. |
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| Most have some collectible minerals such as beryl, garnet, and schorl, and a few have lithium minerals. |
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| Most rocks and minerals are transparent in slices as thin as this and can be viewed in transmitted light at various magnifications. |
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| The most common minerals of gold are the tellurides, such as gold telluride, present in the mineral calavarite. |
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| It never occurs as a free element, but is found in minerals such as spodumene, petalite, and lepidolite. |
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| More than ten minerals have been found in the Nantan meteorites with kamacite and taenite dominant. |
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| The sedimentary clasts also contain abundant opaque minerals, chiefly magnetite. |
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| The magnetite, uralite, and other minerals can be exposed by etching away the enclosing calcite with hydrochloric acid. |
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| The main impact of the diamagnetic components is dilution of the strongly magnetizable minerals. |
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| Calcium, magnesium, phosphorus and zinc are the major minerals that make up bones. |
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| Where the rock contains mineral grains it may be possible to determine the hardness, lustre and streak of the minerals. |
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| Potassic minerals were degassed with an argon laser probe using step heating or direct ablation of grains on thin rock sections. |
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| Goethite and lepidocrocite, FeOOH, are common replacement agents of pyrite and also occur as stains on minerals exposed to weathering. |
|
| Lunar settlers could extract oxygen from the minerals ilmenite and anorthite. |
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|
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| The luster is normally very bright, but some crystals are coated with iron and clay minerals and have lost their luster. |
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| The question is whether ceramics known as gabbroic pottery, including Trevisker ware, include gabbro-rock minerals added as a temper. |
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| This book magnificently fulfills the longstanding need for a comprehensive reference on this iron deposit famous for its rare minerals. |
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| Other minerals found here are the red ochre, soap stone, white quartz and molding sand. |
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| Because they formed within the peat, coal balls generally contain very little detrital clay minerals and quartz. |
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| Sphalerite and lollingite are locally common accessory minerals in this rock. |
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| Asbestos and asbestiform minerals may occur as a natural accessory mineral in other industrial mineral deposits or rocks. |
|
| The pegmatites are composed of K-feldspar, quartz, plagioclase and biotite, with titanite, opaque minerals and apatite as accessory minerals. |
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| Garnets are common accessory minerals in granitic pegmatites and are typically members of the spessartine-almandine solid-solution series. |
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| Sulphide minerals in the gold ridges dissolve and creates mineral-rich acidulated water. |
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| Suffice it to say, different minerals weather and grow at different rates within higher organisms, just as they do in the ambient environment. |
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| Food needs to be balanced with the appropriate vitamins and minerals which are not present in our food. |
|
| The presence of several amphibole minerals, such as tremolite, actinolite, anthophyllite, was confirmed. |
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| That means a bumper package of proteins, minerals and essential oils to revitalise the skin, promoting natural radiance. |
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| After ceasing to haul timber and minerals, the track was used briefly to haul tourists in an old automobile converted into a railbus. |
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| Harvey's team suggests that organic carbon feeds chemical reactions that liberate arsenic from minerals in the soil. |
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| The weathered minerals of the regolith, together with an admixture of organic matter and water, make up the soil. |
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| They arrive on wheels, travel through the hospital on wheels and may be prescribed medicine, which originates from plants and minerals. |
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| However, water-soluble rubidium, cesium, thallium, and silver minerals are virtually nonexistent and should pose no complication. |
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| Taking vitamins and minerals in isolation is not advised, as they need to be combined to work synergistically. |
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|
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| It occurs primarily with the other rare earth elements in two minerals, monazite and bastnasite. |
|
| Gemstones are minerals esteemed for their qualities of beauty, durability, and rarity. |
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| These include clay minerals such as kaolinite and talc, micas, montmorillonites, and the remainder of the asbestos minerals including chrysotile. |
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| In this case the surrounding sediment matrix is dominated by detrital quartz and illite along with various other clay minerals. |
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| Vein minerals are barite, calcite, chalcopyrite, kaolinite, pyrite, sphalerite, and wurtzite. |
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| They were fed on a simple ration of barley, sugar beet pulp, soya and minerals. |
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| Animals on rotationally grazed pastures received ad libitum access to minerals. |
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| Nearly twice as sweet as white sugar, maple syrup adds rich flavor and trace minerals to nearly any recipe. |
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| It's an all-natural blend of minerals, herbs and oils to soothe your keister and make it kissably fresh. |
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| The material inside the skull is an aggregate of clay-sized chloritic material and is a treasure trove of minerals. |
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| Grit is essential in most birds' diets, both as an aid to digestion and as a source of minerals. |
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| According to the scientists, the technique could be adapted for use in separating minerals. |
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| Certainly, the wishers and dreamers have crisscrossed these lands several times, hunting for wealth in crops, cattle, and minerals. |
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| Sulfates are a combination of sulfur and oxygen and are a part of naturally occurring minerals in some soil and rock formations that contain groundwater. |
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| Kyanite, microcline, zircon, monazite and opaque minerals are variably present with epidote, actinolite and chlorite being present as secondary alteration minerals. |
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| Then, he set to work building a shortcut that would take the minable minerals he found through the mountain. |
|
| Overcooking vegetables saps them of flavour and texture and makes them far less healthy to eat, as the vitamins and minerals become lost in the cooking water. |
|
| The nomads bring their animals here to the town of InGall in Niger to feed on grass which is rich in salt minerals, believing that the practice fortifies the animals. |
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| The water in the mantle may be contained either in high pressure hydrous phases, or alternatively as small hydrous defects in nominally anhydrous minerals. |
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| Other minerals associated with the orpiment crystals are white to colorless barite crystals, lemon-yellow crystalline masses of sulfur, and minor realgar. |
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|
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| Fruit and vegetable juices are loaded with vitamins and minerals. |
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| Associated minerals can include cerussite, anglesite, pyromorphite, smithsonite, hemimorphite, wulfenite, willemite, vanadinite, descloizite, caledonite, and others. |
|
| To prevent illness and promote a healthy childhood, many parents turn to diet and nutrition since macronutrients, vitamins and minerals promote healthy minds and bodies. |
|
| Most desert soils are typically lithosols, the important constituents of which are resistate detrital quartz and accessory minerals such as zircon and secondary clay minerals. |
|
| They pointed out that while most minerals had fully ad valorem rates of royalty at present, iron ore, limestone and dolomite had tonnage-based royalty. |
|
| Magnetite, apatite, titanite and zircon make up the accessory minerals. |
|
| This organic debris is considered the original source for some chemical cave minerals but is also associated with the generation of autochthonous clastic sediments. |
|
| The retention of vitamins during cooking ranges from 67 to 76 percent, while that of minerals is over 100 percent, as the minerals become more concentrated. |
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| That makes it a reliable way to measure how much oxygen was in the atmosphere when the minerals were deposited. |
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| The technique was to go slowly back and forth parallel to the shore on the basalt reef and locate any fissure veins containing copper or other minerals. |
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| They are rich in vitamins, minerals, fiber, and essential fatty acids. |
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| The titanite grains from Zones 1 and 2 show marginal growth interstitial to newly grown crystals of metamorphic minerals such as plagioclase, biotite and zoisite. |
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| They contain sulfide minerals as well as metamorphic minerals that include cordierite, gahnite, epidote, garnet, amphiboles, schorl, and many others. |
|
| These include carbs and protein and fats, minerals and vitamins and electrolytes. |
|
| Problems arise when chemical reactions change the arsenates into arsenites, which don't bind tightly to other minerals and can therefore enter the underground water supply. |
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| It occurs most commonly in the minerals scheelite and wolframite. |
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| Two zeolite minerals, analcime and natrolite, were identified, representing the first authenticated occurrence of these zeolites in Ontonagon County. |
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| Associated minerals include pyrophyllite, lazulite, quartz, various brightly colored iron oxides, barite, and a suite of microcrystalline phosphates. |
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| Even collectible new minerals have made recent appearances, including hubeiite and associated inesite from the Fengjiashan wollastonite mine at Daye, Hubei Province. |
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| The minerals found in Maharashtra are mostly zeolites, some of which occur as tiny tube fillings, spherules, nodules, and patches of zeolitic material in basalt. |
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| Silicate minerals constitute most alluvial sediment on Earth. |
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| Sukow suggested that the coloration may be due to aggregates of acicular crystals of copper minerals scattered or concentrated throughout the datolite nodule. |
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| Belgium is also an important producer of several industrial minerals, including limestone, dolomite, whiting, sodium sulfate, silica sand, and marble. |
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| Although no spectacular or highly valuable minerals are present, the pegmatites contain minerals seldom found in Wyoming, such as petalite, beusite, lepidolite, and tantalite. |
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| The U.S. is one of Ecuador's largest customers, buying cut flowers, asparagus, minerals, and Pacific tuna fish. |
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| Many prominent Congolese human-rights activists consider minerals to be at the heart of the perpetration of atrocities. |
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| Lagged realisation prices and weak markets are likely to have affected its coal and industrial minerals businesses, but that won't outshine the good news. |
|
| Since ancient times this area was famous for its argentiferous minerals. |
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| Research has demonstrated that specific amino acid complexes of trace minerals are more bioavailable and have better retention than inorganic sources. |
|
| Within this unique ecosystem, high levels of silica, minerals and algae form a light sediment at the bottom of the lagoon, giving it a soft milky aquamarine colour. |
|
| Almandine, spessartine, grossular, uvarovite, andradite and pyrope are six minerals which are regarded as belonging to the garnet family. |
|
| In this paper, accessory minerals such as zircon, sphene and apatite are studied in Ghareh Gheshlagh area. |
|
| Zircon, opaque minerals, titanite and Fe oxides are present in the rock as accessory minerals. |
|
| Water softening is a process by which dissolved minerals are removed from the solution. |
|
| Non-metallic minerals are apatite, quartz, hornblende, actinolite, epidote, chlorite, Saussure, pomegranate. |
|
| Ore minerals in the deposit consist of scheelite, minor wolframite, and molybdenite. |
|
| Typical accessory minerals include apatite, zircon, fluorite, magnetite, titanite, and allanite. |
|
| Packed with Vitamin C, E, B, allantoin, minerals, proteins, amino acids and beta-carotene, this oil can speed up the healing process. |
|
| And then there are the zeolites, various aluminosilicate minerals found mostly in volcanic rocks. |
|
| It is a fine, usually white clay formed by the weathering of aluminous minerals such a feldspar, a plastic clay mineral kaolinite. |
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|
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| As a crucial strategic resource, it is mainly contained in bastnaesite, xenotime, monazite, and other minerals. |
|
| Kyanite, garnet, monazite, and amphibole are common minerals, while apatite, anatase, titanite, corundum, pyroxene, and epidote are rare. |
|
| Metalcasting was born shortly after the Anatolians began bringing colored minerals and stones into their settlements and shaping them into tools. |
|
| Zeolites are porous minerals composed of silicon, aluminum and oxygen atoms with narrow channels, like the lift shafts in a block of flats. |
|
| Accessory minerals are represented by apatite, zoisite, sphene, calcite, fluorite and magnetite. |
|
| These minerals include sheet kaolinite, vermiform kaolinite, k-feldspar, pyrite crystals, corrosion quartz and corrosion feldspar. |
|
| So, processing of local dictyonema argillite started there to produce uranium and other useful minerals. |
|
| Boron ores are mined to extract minerals such as colemanite, kernite, tincal, and ulexite. |
|
| Most environmental arsenic occurs naturally, appearing in deposits of minerals and ores including arsenopyrite, enargite, and proustite. |
|
| The minerals redissolve and toxic saline 'mono-sulfidic black ooze' is formed. |
|
| Within the weathered rocks a range of secondary copper minerals were identified including native copper, atacamite and chalcocite. |
|
| The sets of minerals of this skarn include quartz, calcite, grossular, augite, and gypsum. |
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| In this text it is recommended for hepatitis along with a high protein, lactovegetarian low-fat diet, vitamins and minerals and physio-therapy. |
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| The reprive given for producers of minerals not yet 100 percent refined will only temporary. |
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| But, with the development of new techniques, minerals, such as baddeleyite, can now be successfully recovered. |
|
| Minor minerals include schreibersite, rhabdite, troilite, cohenite, graphite, and sphalerite. |
|
| The minerals identified included bastnaesite, yttrofluorite, yttrocerite, columbite, changbaiite, and kasolite. |
|
| Secondary minerals in these rocks include chlorite, calcite, Iron hydroxide, opaque mineral, Leucoxene and quartz. |
|
| Analyses using a polarizing light microscope aids in identification of cellulose and various minerals such as quartz and feldspar. |
|
| Belize is known to have a number of economically important minerals, but none in quantities large enough to warrant mining. |
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|
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| Under conditions of strong oxidation, Cd is likely to form minerals and is also likely to be accumulated in phosphate and in biolith deposits. |
|
| When the lavas cooled they would pass through the Curie point, and their magnetic minerals would become magnetised. |
|
| The present note relates to the behaviour of uranium minerals such as uraninite, curite, and uranophane in high-tension separators. |
|
| A lot of druses are found in the vein, and euhedral crystals of quartz, marcasite and sphalerite are observed as druse minerals. |
|
| Occurs as a fine coating over the minerals in druses or cavities in the granite. |
|
| Most of the mining happens in the Pyrenees mountains, iron, gold, coal, valuable minerals such as lead, silver, zinc, and salt are all mined. |
|
| These minerals are primarily carbonates, sulfides, or oxides of the metal, mixed with other components such as silica and alumina. |
|
| Roasting the carbonate and sulfide minerals in air converts them to oxides. |
|
| Phoenician traders probably began visiting Great Britain in search of minerals around this time, bringing with them goods from the Mediterranean. |
|
| Norway has extensive reserves of petroleum, natural gas, minerals, lumber, seafood, fresh water and hydropower. |
|
| The country is richly endowed with natural resources including petroleum, hydropower, fish, forests, and minerals. |
|
| Most sandstone is composed of quartz or feldspar because these are the most common minerals in the Earth's crust. |
|
| In caves, a variety of features collectively called speleothems are formed by deposition of calcium carbonate and other dissolved minerals. |
|
| Heavy rainfall can leach out minerals important for plant growth from the soil. |
|
| Geologists such as Albert Ernest Kitson were called on to find new resources of precious minerals in the African colonies. |
|
| Manganese, titanium and numerous other minerals occur in various parts of Wales. |
|
| Although exploited in the past, none of these minerals is mined on a commercial scale today. |
|
| Base Titanium, a subsidiary of Base resources of Australia, shipped its first major consignment of minerals to China. |
|
| The proportion of silica in rocks and minerals is a major factor in determining their name and properties. |
|
| Color is a secondary identifier for the cryptocrystalline minerals, although it is a primary identifier for the macrocrystalline varieties. |
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|
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| All other minerals present are regarded as nonessential in almost all igneous rocks and are called accessory minerals. |
|
| Types of igneous rocks with other essential minerals are very rare, and these rare rocks include those with essential carbonates. |
|
| Traders came from Gaul and the Mediterranean localities to seek minerals from North Wales and Cheshire. |
|
| This usually occurs on ternary diagrams, where the relative proportions of three minerals are used to classify the rock. |
|
| As minerals crystallize, the composition of the residual melt typically changes. |
|
| These are the elements that combine to form the silicate minerals, which account for over ninety percent of all igneous rocks. |
|
| Leaching dissolves minerals in an ore body and results in an enriched solution. |
|
| Arsenic, tin, antimony, silver, gold, copper, and bismuth are common impurities in lead minerals. |
|
| With the exception of wurtzite, all these other minerals were formed by weathering of the primordial zinc sulfides. |
|
| To study all three types of rock, geologists evaluate the minerals of which they are composed. |
|
| The oxygen quickly reacted with iron and other minerals in the surrounding rock and ocean water. |
|
| Each of these different clays are composed of different types and amounts of minerals that determine the characteristics of resulting pottery. |
|
| Kaolin is the primary material from which porcelain is made, even though clay minerals might account for only a small proportion of the whole. |
|
| Laver has a high content of dietary minerals, particularly iodine and iron. |
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| Once in this form, water passing through the rock can carry and deposit minerals, which can alter the color of the rock. |
|
| Rock or stone is a natural substance, a solid aggregate of one or more minerals or mineraloids. |
|
| For example, granite, a common rock, is a combination of the minerals quartz, feldspar and biotite. |
|
| The minerals and metals found in rocks have been essential to human civilization. |
|
| The aggregate minerals forming the rock are held together by chemical bonds. |
|
| The types and abundance of minerals in a rock are determined by the manner in which the rock was formed. |
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|
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| The original rock, known as the protolith, transforms into other mineral types or other forms of the same minerals, by recrystallization. |
|
| The name of the rock is then determined based on the types of minerals present. |
|
| Schists are foliated rocks that are primarily composed of lamellar minerals such as micas. |
|
| Sand deposits in some areas contain garnets and other resistant minerals, including some small gemstones. |
|
| This allows the exchange and cycling of oxygen, nutrients, and minerals between water and sediment. |
|
| The more active ash minerals become concentrated in the fly ash precisely because they do not burn well. |
|
| The anionic pertechnetate and iodide tend not to adsorb into the surfaces of minerals, and are likely to be washed away. |
|
| With increased pressure over time, the platey clay minerals may become aligned, with the appearance of fissility or parallel layering. |
|
| These deposits also may contain important minerals that help in today's economy. |
|
| Evaporite minerals, especially nitrate minerals, are economically important in Peru and Chile. |
|
| Nitrate minerals are often mined for use in the production on fertilizer and explosives. |
|
| Large amounts of water are also chemically combined or adsorbed in hydrated minerals. |
|
| Evaporite minerals start to precipitate when their concentration in water reaches such a level that they can no longer exist as solutes. |
|
| Mining engineering is an engineering discipline that applies science and technology to the extraction of minerals from the earth. |
|
| Mining activities by their nature cause a disturbance of the natural environment in and around which the minerals are located. |
|
| The first step in discovering an ore body is to determine what minerals to test for. |
|
| Also called open pit mining, surface mining is removing minerals in formations that are at or near the surface. |
|
| Surface mining involves quarrying which is excavating minerals by means of machinery such as cutting, cleaving, and breaking. |
|
| With placer mining, minerals can also be removed from the bottoms of lakes, rivers, streams, and even the ocean by dredge mining. |
|
| The states may impose additional regulations and regulate other minerals in addition to coal for land reclamation. |
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|
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| Hydrothermal vents are common near these volcanoes, and some support peculiar ecosystems based on dissolved minerals. |
|
| In the case of the alkali feldspar minerals, thin white albite layers will alternate between typically pink microcline. |
|
| Portugal is a significant European minerals producer and is ranked among Europe's leading copper producers. |
|
| The minerals are carried by the drainage basin to the mouth, and may accumulate there, disturbing the natural mineral balance. |
|
| The sedimentary rocks associated with continental rifts host important deposits of both minerals and hydrocarbons. |
|
| The Baltic Shield yields important industrial minerals and ores, such as those of iron, nickel, copper and platinum group metals. |
|
| This produced water often has a high content of salt and other dissolved minerals that occur in the formation. |
|
| Another work by Theophrastus, On Stones was cited as a source on ores and minerals. |
|
| Diamond sits at the top of the series because, Pliny says, it will scratch all other minerals. |
|
| Sedimentation may also occur as minerals precipitate from water solution or shells of aquatic creatures settle out of suspension. |
|
| Clastic sedimentary rocks are composed of other rock fragments that were cemented by silicate minerals. |
|
| Sedimentary rocks are often saturated with seawater or groundwater, in which minerals can dissolve, or from which minerals can precipitate. |
|
| Precipitating minerals reduce the pore space in a rock, a process called cementation. |
|
| The precipitated minerals form a cement and make the rock more compact and competent. |
|
| Some biochemical processes, like the activity of bacteria, can affect minerals in a rock and are therefore seen as part of diagenesis. |
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| In contrast to igneous and metamorphic rocks, a sedimentary rock usually contains very few different major minerals. |
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| However, the origin of the minerals in a sedimentary rock is often more complex than in an igneous rock. |
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| Carbonate rocks dominantly consist of carbonate minerals such as calcite, aragonite or dolomite. |
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| The resistance of rock forming minerals to weathering is expressed by Bowen's reaction series. |
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| In most sedimentary rocks, mica, feldspar and less stable minerals have been reduced to clay minerals like kaolinite, illite or smectite. |
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| In the same way, precipitating minerals can fill cavities formerly occupied by blood vessels, vascular tissue or other soft tissues. |
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| Lichens make their own food from their photosynthetic parts and by absorbing minerals from the environment. |
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| The most abundant silicate minerals on Earth's surface include quartz, feldspars, amphibole, mica, pyroxene and olivine. |
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| The core may be microscopically small and is sometimes completely transformed into manganese minerals by crystallization. |
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| Clay minerals likely having been deposited by the mainland river Orinoco and the Magdalena River. |
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| In geology, a placer deposit or placer is an accumulation of valuable minerals formed by gravity separation during sedimentary processes. |
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| Only if the deposit is winnowed in this way can the minerals be concentrated to economic levels. |
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| The chemical composition of nodules varies according to the kind of manganese minerals and the size and characteristics of the core. |
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| Egyptians, Romans, Babylonians, and early Germans all are recorded as using minerals and or manure to enhance the productivity of their farms. |
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| Other minerals include china clay and ores of copper, lead, zinc and tungsten. |
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| Fine grained sedimentary rocks were transformed into hornfels and minerals such as amphibole, pyroxene. |
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| Each stage is associated with different temperatures, economic deposits of different metals and different gangue minerals. |
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| Siberia is extraordinarily rich in minerals, containing ores of almost all economically valuable metals. |
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| Some pseudofossils, such as dendrites, are formed by naturally occurring fissures in the rock that get filled up by percolating minerals. |
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| Geologic clay deposits are mostly composed of phyllosilicate minerals containing variable amounts of water trapped in the mineral structure. |
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| In addition to the weathering process, some clay minerals are formed through hydrothermal activity. |
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| Different types of clay, when used with different minerals and firing conditions, are used to produce earthenware, stoneware, and porcelain. |
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| The reinforcement materials are often fibres but also commonly ground minerals. |
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| Nutrient inputs can be chemical inorganic fertilizers, manure, green manure, compost and mined minerals. |
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| This is more common among animals inhabiting regions where the soil is deficient in these minerals. |
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| Swedish taxes on minerals are low in an international comparison in order to increase mineral exploration. |
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| The rise, of many binary, ternary and perhaps polyfold eutectics, often with the character of independent minerals was proved by experience. |
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| Inorganic compounds are processed minerals such as iron oxides, talc, and zinc oxide. |
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| Some minerals are nacreous or pearlescent, giving the skin a shining or sparking appearance. |
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| Avoid iron rich deposits when using a compass, for example, certain rocks which contain magnetic minerals, like Magnetite. |
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| Mining of diamonds in the east and other minerals expanded, drawing labourers there from other parts of the country. |
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| Ghana is an average natural resource enriched country possessing industrial minerals, hydrocarbons and precious metals. |
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| The island is rich in minerals such as ilmenite, feldspar, graphite, silica, kaolin, mica and thorium. |
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| Maya ceramics were painted with clay slips blended with minerals and coloured clays. |
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| Other minerals from the sedimentary rocks include pyrite, calcite, barite, manganite, and pyrolusite. |
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| Their success, though lacking in minerals, was such that the company was chartered by Charles II on their return. |
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| During the 17th century the first deposits of iron and copper ores, mica, gemstones and other minerals were discovered in the Ural. |
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| The Ural Mountains contain about 48 species of economically valuable ores and economically valuable minerals. |
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| Also included in some sheep's diets are minerals, either in a trace mix or in licks. |
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| Hydrothermal circulation and fracturing soon followed, altering the dacite and depositing ore minerals and gangue in the veins. |
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| Throughout the Shield there are many mining towns extracting these minerals. |
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| Many metallic minerals are exploited, the principals are gold, iron, copper and zinc. |
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| Many other substances are extracted including titanium, asbestos, silver, magnesium, nickel and many other metals and industrial minerals. |
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| The land away from the coast is rich in minerals and ores, and mining forms the second largest industry. |
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| Many igneous rocks also contain the sulfide minerals pyrrhotite and pentlandite. |
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