| The fibrous layer, which is made of aragonite and organic material, is elastic only under compressional stress. |
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| Microscopic crystals of aragonite located in the inner ears of zebrafish control balance and hearing. |
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| Also, aragonite tends to have much higher amounts of strontium as a trace element in the calcium carbonate. |
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| Vein minerals are aragonite, barite, calcite, dolomite, quartz, sphalerite, and whewellite. |
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| Otoliths consist of calcium carbonate, mainly in the form of aragonite, and organic matter called otoline. |
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| Strontium concentrations in seawater reflect the diagenesis of Sr-rich aragonite to calcite on continental shelves. |
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| Aggressive limescale is transformed into powdery aragonite and easily flushed away with the water. |
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| Four layers of lenticular aragonite in aragonitic limestone and constituted by aragonite crystals in needles. |
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| An organic substance, set up as a fine network, helping to hold tight the aragonite crystals. |
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| The quality and smoothness of the layers of aragonite determine the orient of the pearl, its shine and its intensity. |
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| Unique for the spectacular stalactites and stalagmites and the formation of needlelike crystals of aragonite, among the oldest of Europe. |
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| The formation of botryoidal aragonite and clotted micrite was followed by silicification of carbonate phases and precipitation of authigenic quartz. |
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| In other words, the system is in equilibrium and shells made of aragonite will not tend to dissolve. |
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| Lots of these are made of calcium carbonate, which comes in two crystalline forms: calcite and aragonite. |
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| Coral's hard parts are composed of aragonite, a form of calcium carbonate. |
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| Another example of microstructural control is that aragonite with complex microstructures can dissolve more rapidly than thermodynamically less stable magnesian calcite. |
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| Use of a polycrystalline porous material, consisting essentially of aragonite, as a three-dimensional solid support for in vitro cell culture. |
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| Biogenic aragonite, like that composing the shells of most mollusks, dissolved rapidly on the sea floor after death. |
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| Cuttlefish possess an internal structure called the cuttlebone, which is porous and is made of aragonite. |
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| The first mollusc shell almost certainly was reinforced with the mineral aragonite. |
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| All shell samples were tested for recrystallisation prior to dating and only samples composed of aragonite were dated. |
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| The grafter artificially introduces a foreign body into the animal, with the idea of compelling it to put its defence mechanism into action, to isolate the intruder by enveloping it in the aragonite. |
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| Declines in aragonite saturation state have the potential to weaken the calcification ability of coral reefs and may lead to long term instability of reef structures. |
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| Carbonate rocks dominantly consist of carbonate minerals such as calcite, aragonite or dolomite. |
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| The crystals are of quartz, less often of calcite or dolomite, and sometimes of aragonite, ankerite, hematite, magnetite, pyrite, chalcopyrite, and sphalerite. |
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| Atomic absorption spectrophotometry has shown that ultratraces of metals are present in the aragonite skeleton of the hydrozoan coral Millepora from a reef flat on the Coral Sea Plateau off Queensland. |
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| A composition for use in an osteogenic product, comprising aragonite and a protein or mixture of proteins which is capable of inducing bone formation when implanted in a body. |
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| The composition CaCO3 most commonly occurs in two different polymorphs: rhombohedral calcite with calcium surrounded by six closest oxygen atoms and orthorhombic aragonite with calcium surrounded by nine closest oxygen atoms. |
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| They have also discovered that the shells of many organisms in the area are short of aragonite, a form of calcium carbonate that gives them strength, but whose formation acid discourages. |
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| Unfortunately, this is more sensitive to acidity than calcite is. An omega value for aragonite of one is the level of acidity where calcium carbonate dissolves out of the mineral as easily as it precipitates into it. |
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| Their mother-of-pearl consists of innumerable minute chalk crystals in the form of the mineral aragonite, which on their own would be very brittle. |
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| Composite that can be used as a bone reconstruction material, characterised in that it is made up of a combination of synthetic aragonite having pores and at least one medicinal substance. |
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| It includes sights of a unique aragonite formation, measuring 4 meters high and 10 meters wide, in a large hollow underground setting where light and music beautifully set the works of time. |
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| Resilient, translucent and iridescent, formed of many fine layers of transparent aragonite, Mother-of-pearl is an organic composite material secreted by the epithelial cells in the mantle tissue of certain molluscs. |
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| These organisms secrete shells made of aragonite or calcite, and leave these shells behind when they die. |
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| Calcite contains calcium atoms coordinated by 6 oxygen atoms, in aragonite they are coordinated by 9 oxygen atoms. |
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| They studied in their models changes in the saturation level of aragonite typically used to measure of ocean acidification. |
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| Other speleothems include flowstone that looks like a rock river, rounded polished cave pearls, and feathery aragonite. |
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| In the third stage of carbonation, the previously originated carbonate formations recrystallize giving rise to very large calcite and aragonite crystals. |
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| Calcium carbonate occurs as aragonite, calcite and dolomite. |
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| During that period, the lowest depth at which aragonite saturates the water has migrated upward as much as 150 meters in the tropical Atlantic, for example. |
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| Calcite, aragonite and vaterite are pure calcium carbonate minerals. |
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| Coral reefs are aragonite structures produced by living organisms, found in shallow, tropical marine waters with little to no nutrients in the water. |
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| A shell is said to be recrystallized when the original skeletal compounds are still present but in a different crystal form, as from aragonite to calcite. |
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| Aragonite saturation state dynamics in a coastal upwelling zone. |
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