How to use apatite in a sentence

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Sentence Examples Thus it is with some surprise that we report for the first time the discovery of well-formed crystals of apatite in Ohio. The rock consists of plagioclase, K-feldspar, quartz, clinopyroxene and biotite, with abundant apatite, and ilmenite. Optically, purple apatite commonly shows slight bluish to reddish pleochroism. How about apatite, apophyllite, axinite, chlorite, hypersthene, scapolite, serpentine, tantalite, and wolframite? Large titanite euhedra are abundant along with apatite and zircon, with allanite and epidote less so. Other accessory minerals are apatite, zircon, monazite, huttonite and rare xenotime, uraninite and betafite. Here, we can observe dentine tubules around which the apatite has been partially resorbed. The mineral assemblage comprises quartz, K-feldspar, albitic plagioclase, white mica, apatite, tourmaline and garnet. The pegmatites are composed of K-feldspar, quartz, plagioclase and biotite, with titanite, opaque minerals and apatite as accessory minerals. The sample is composed of K-feldspar, plagioclase and quartz with accessory apatite, magnetite, titanite, zircon and secondary epidote. In all specimens the groundmass is peppered with opaque minerals, rare apatite laths and rare euhedral blade-like calcite. The unusual age zonation is probably linked to the mineralogical association of monazite and apatite during metamorphic reactions. Extreme cases are found in mineral groups such as apatite, amphibole, pyroxene, feldspar, and tourmaline. The next few pockets yielded only dark blue apatite and clear to smoky to pale citrine quartz. Major mineral phases include plagioclase and pyroxene, with small amounts of opaque minerals, olivine, apatite, and sometimes biotite. They typically comprise early olivine and plagioclase, ophitically enclosed by augite, with opaque oxides and apatite. Ye et al. recently reported abundant exsolutions of clinopyroxene, rutile and apatite in garnet of a Yangkou eclogite sample. The most familiar apatite derivative is hydroxyapatite, the bulk mineral constituent of bone. Inclusions of quartz, tourmaline, apatite, and muscovite crystals have been described. Some calcareous veins contain epidote, titanite and apatite. Show More Sentences Magnetite, apatite, titanite and zircon make up the accessory minerals. Secondary minerals vary, including mica, amphibole, pyroxene, apatite, zircon and tourmaline. In contrast with the well-known, somewhat similar mine at Panasqueira, Portugal, it is remarkable that at Yaogangxian fluorite is very common, and apatite is rather rare. The model was then used to compare experimental results of apatite materials studied by single crystal and Rietveld analysis. Data was not obtained for the SRPR due to low total P content and lack of apatite present in the rock. Along with Singaporean colleagues, a thorough and systematic approach to investigating the apatite crystal chemistry was developed. A crystal-chemical model of apatite was created by Mercier, linking the mineral's crystal structure to its chemical composition. The complex contains primarily calcite with zones rich in biotite, apatite, and magnetite. The xenolith is composed predominantly of biotite and microcline with minor amounts of catapleiite, apatite, zircon and other accessory minerals. It is a reddish brown sandstone formed by detrital quartz, plagioclase, feldspar and muscovite, with subordinate apatite, zircon and opaque minerals. Using the flux growth method pioneered by Prener and others, we could grow idiomorphic apatite single crystals up to ca. 6 mm in size. As diagenetic growth of authigenic apatite continues within a bone, the isotopic composition of the whole bone will trend towards a purely diagenetic signal. The main constituent phases of these rocks are plagioclase, hornblende, pyroxene, quartz and K-feldspar, and accessory phases include magnetite, sphene, zircon and apatite. When falling into water this ash instantly cements as sodium carbonate and, in this alkaline environment, bone apatite and calcium carbonate fossils are relatively insoluble. Chloritized amphibole with associated apatite is the main ferromagnesian mineral phase in all three units. The dominant non-clay mineral composition of the coarse fraction consists of biotite, quartz, and sanidine with lesser amounts of apatite and zircon. Accessory chlorite, magnetite or ilmenite, titanite, apatite, partly chloritized biotite, epidote, pyrite and sometimes cummingtonite, are present. Sillimanite, cordierite, apatite, monazite and zircon are also present. Accessory minerals may include sanidine, melilite, sodalite, perovskite, apatite, and chromite. Other minerals that have been used as a source of rare earths are apatite, euxenite, gadolinite, and xenotime. Show More Sentences Non-metallic minerals are apatite, quartz, hornblende, actinolite, epidote, chlorite, Saussure, pomegranate. In this paper, accessory minerals such as zircon, sphene and apatite are studied in Ghareh Gheshlagh area. Typical accessory minerals include apatite, zircon, fluorite, magnetite, titanite, and allanite. Accessory minerals are represented by apatite, zoisite, sphene, calcite, fluorite and magnetite. Phosphorus is bound in apatite of lingulate brachiopods Paterina and Mickwitzia and phosphatic pebbles. An essential condition for an artificial material to bond to living bone is the formation of bonelike apatite on its surface in the living body. The electron microscopy of the thrombotic vegetation demonstrated nanobacterium as a nidus for carbonate apatite formation. Lu-Hf isotope systematics of fossil biogenic apatite and their effects on geochronology. When first deposited, mineral is crystallographically amorphous, but with maturation it becomes typical of the apatite minerals, the major component being hydroxyapatite. Bracelet with luscious strand of vibrant swiss blue topaz and apatite faceted teardrops, each hand wrapped to shiny 24 karat gold vermeil ballpins. Collophane, massive cryptocrystalline apatite, composing the bulk of fossil bone and phosphate rock, commonly carbonate-containing fluorapatite or fluorian hydroxylapatite. Odontolite, also called Bone Turquoise, or Fossil Turquoise, fossil bone or tooth that consists of the phosphate mineral apatite coloured blue by vivianite. The following major and minor minerals were identified in the samples examined: quartz, orthoclase, albite, anorthite, biotite, muscovite, garnet, secondary chlorite, kaolinite, magnetite, ilmenite, hematite, and apatite. Key to Mercier's research is the use of crystallographic diffraction techniques, such as X-ray powder diffraction, to analyze and define the crystal-chemical parameters of apatite containing heavy metals. Early-forming apatite is so fluorine-rich that it vacuums all the fluorine out of the magma, followed by chlorine. Because closure temperatures vary widely from, say, 300 °C for titanite and zircon to less than 100 °C for biotite and apatite, valuable information can be obtained regarding the uplift and cooling rates of crustal rocks. The dogma of a dry Moon was challenged and counterchallenged in two studies examining the geochemistry of hydrogen and chlorine in samples of the mineral apatite taken from lunar rocks. Preparation of a kind used in animal feeding, obtained via a high-temperature chemical reaction of a mixture of apatite, phosphoric acid and sodium carbonate or sodium hydroxide. The mineral has been described previously from other localities, and the new name has been introduced to distinguish the F-rich and OH-rich members, analogous to that for the apatite and apophyllite groups. Another private ESCO was set up in the High Efficiency Demonstration Zone of Kirovsk with the goal of reducing energy consumption in the Russian apatite production sector. Show More Sentences For its part, the Grenville Province has deposits of magnetite, pegmatites containing mica, feldspar, apatite, uranium, titanium, as well as zinc and lead sulphides. Among other minerals found in them are biotite, chlorite, tourmaline, epidote, apatite, garnet, hornblende, augite, sphene and pyrites. Shales may also contain concretions consisting of pyrite, apatite, or various carbonate minerals. Research has shown bone apatite to undergo chemical exchange with carbonates in either vadose water or groundwater. Asparagus stone, gem-quality, asparagus-green apatite. Kyanite, garnet, monazite, and amphibole are common minerals, while apatite, anatase, titanite, corundum, pyroxene, and epidote are rare. The composition provides an inhibition of bacterial adhesion to an apatite test plate analyzed by scanning electron microscopy. Chunks of the mineral apatite offer clues to how long particular rocks have been exposed at the surface, revealing when canyons were carved. In 2Q the company became sufficient in apatite concentrate and thus ceased purchasing this raw material from third parties. The skarn hosts large phlogopite, diopside, apatite crystals and uraninite crystals. Magnetite contains inclusions of calcite, apatite, phlogopite, and pyroxenes. The most mineralized sample consists of red apatite in a skarn zone. In addition, the clay minerals included common mica, occasional garnet group minerals, apatite, and rare titanite, ilmenite, zircon, rutile and iron oxides. The apatite coatings formed during the late post-impact to early diagenetic mineralization processes, and carbonate cement at later stages of diagenesis. The mass of gilbertite in the specimens in my possession, is mixed with dark purple fluor spar, and with specks of another mineral, which has the aspect of apatite. We had prepared, by precipitation methods, finely divided crystalline apatites that were similar in crystal size and x-ray diffraction profile to bone apatite. In several cases green apatite and scapolite occur with the graphite. In the United States, tobacco is often fertilized with the mineral apatite, which partially starves the plant of nitrogen, to produce a more desired flavor. Examples from Classical Literature We have already referred in Chapter V. to large deposits of apatite or phosphorite found in Canada. The accessory minerals of these rocks are principally oligoclase, muscovite, apatite and zircon. The dolomite of Ceylon is not pure, far from it, being mixed freely with apatite or phosphate of lime. Among the accessory minerals may be mentioned apatite, magnetite, ilmenite, picotite and garnet. With regard to its mode of occurrence, apatite is found under a variety of conditions. The usual association with apatite and magnetite crystals is noted. In its general appearance, apatite exhibits wide variations. The principal accessory minerals are titaniferous iron oxides and apatite. Find more words! 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Use our Sentence Generator Nearby Words apathy apathetically apathetic apatheia a passing fancy a part of apatosaurus APB APC ape apeak apec 7-letter Words Starting With a ap apa apat apati apatit