aragonite

aragonite
   1. A relatively rare form of calcium carbonate (CaCO3), chemically identical to the more common calcite but of orthorhombic crystal form. Its pure form is metastable in the cave environment, where calcite forms preferentially. It is relatively abundant in some caves due to the presence of impurities, notably strontium, that distort the carbonate lattice and favor aragonite growth. The commonest form seen in caves as small radiating crystals (anthodites) that develop in humid caves, where surfaces are covered by a moisture film but not by flowing water.
   2. A mineral composed of calcium carbonate, CaCO3, like calcite but differing in crystal form [10].
   3. An unstable orthorhombic carbonate mineral, CaCO3 [16].

A Lexicon of Cave and Karst Terminology with Special Reference to Environmental Karst Hydrology. . 2002.

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  • Aragonite — is a carbonate mineral, one of the two common, naturally occurring polymorphs of calcium carbonate, CaCO3. The other polymorph is the mineral calcite. Aragonite s crystal lattice differs from that of calcite, resulting in a different crystal… …   Wikipedia

  • aragonite — [ aragɔnit ] n. f. • 1834; arragonite 1802; de Aragon, province d Espagne ♦ Minér. Variété cristalline de carbonate de calcium qui peut former des stalactites. ● aragonite nom féminin Variété de carbonate de calcium CaCO3, orthorhombique, qui… …   Encyclopédie Universelle

  • Aragonite — A*rag o*nite, n. [From Aragon, in Spain.] (Min.) A mineral identical in composition with calcite or carbonate of lime, but differing from it in its crystalline form and some of its physical characters. [1913 Webster] || …   The Collaborative International Dictionary of English

  • aragonite — s. f. [Mineralogia] Carbonato de cálcio cristalizável.   ♦ Grafia no Brasil: aragonita …   Dicionário da Língua Portuguesa

  • aragonite — [ə rag′ə nīt΄, ar′ə gənīt΄] n. [after ARAGON2, in Spain] a semihard, orthorhombic mineral resembling calcite, made up of calcium carbonate, CaCO3: it is found in sedimentary and metamorphic rocks and in the skeletons of marine organisms …   English World dictionary

  • Aragonite — Pour les articles homonymes, voir CaCO3. Aragonite[1] Catégorie V : carbonates et nitrates[2] …   Wikipédia en Français

  • aragonite — /euh rag euh nuyt , ar euh geuh /, n. a mineral, orthorhombic calcium carbonate, CaCO3, chemically identical with calcite but differing in crystallization and in having a higher specific gravity and less marked cleavage. [1795 1805; named after… …   Universalium

  • aragonite — aragonitas statusas T sritis chemija apibrėžtis Mineralas. formulė CaCO₃ atitikmenys: angl. aragonite rus. арагонит …   Chemijos terminų aiškinamasis žodynas

  • Aragonite sea — An aragonite sea contains aragonite and high magnesium calcite as the primary inorganic carbonate precipitates. In contrast, a calcite sea is one in which low magnesium calcite is the primary inorganic marine calcium carbonate precipitate.The… …   Wikipedia

  • aragonite — noun Etymology: German Aragonit, from Aragon, Spain Date: 1803 a mineral similar to calcite in consisting of calcium carbonate but differing from calcite in its orthorhombic crystallization, greater density, and less distinct cleavage •… …   New Collegiate Dictionary

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