calcite mineral britannica
Aragonite Definition of Aragonite at Dictionary
Aragonite definition a mineral orthorhombic calcium carbonate CaCO3 chemically identical with calcite but differing in crystallization and in having a higher specific gravity and
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Apr 11 2016 · 1911 Encyclopædia Britannica/Celestine (mineral) From Wikisource Colourless crystals of great beauty occur in association with calcite and native sulphur in the sulphur deposits of Sicily as at Girgenti. Fine blue crystals are yielded by the copper mines of Herrengrund in Hungary a dark blue fibrous form is known from Jena and small
Chat OnlineCalcite1911 Encyclopedia BritannicaBible Encyclopedia
Entry for Calcite 1911 Encyclopedia BritannicaOne of 8 Bible encyclopedias freely available this resource contained over 40 million words in nearly 40 000 articles written by 1 500 respected authors
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The mineral calcite displays cleavage in three directions producing multisided polyhedrons as seen in this group of calcite crystals. Sign up for our Britannica for Parents newsletter for expert advice on parenting in the 21st century Thank you for subscribing
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mineralLusterRelated to the color of a mineral are its luster or the way it looks in reflected light and its streak. The two main types of luster are metallic and nonmetallic. Minerals with a metallic luster are generally opaque meaning that light is reflected from the surface and does not pass through. The cut or polished surface looks shiny as if it were made of metal. Minerals
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mineralHardnessMohs hardness scale and observations on hardness of some additional materialsThe hardness of a mineral is how resistant it is to scratching. Hardness is a very useful property in mineral identification and is usually stated in terms of the Mohs scale.
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Calcite is one of the most common minerals on the Earth s surface. It is a often part of sedimentary rocks especially limestone is also the primary mineral in metamorphic marble.. It is a chemical or biochemical calcium carbonate with the formula CaCO 3 is a carbonate mineral. It can be a vein mineral in deposits from hot springs and in caverns as stalactites and stalagmites.
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May 13 2016 · Calcium carbonate CaCO 3 is of exceptionally wide distribution in both the mineral and animal kingdoms. It constitutes the bulk of the chalk deposits and limestone rocks it forms over one-half of the mineral dolomite and the rock magnesium limestone it occurs also as the dimorphous minerals aragonite (q.v.) and calcite (q.v.).
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mineralHardnessMohs hardness scale and observations on hardness of some additional materialsThe hardness of a mineral is how resistant it is to scratching. Hardness is a very useful mineralHardnessMohs hardness scale and observations on hardness of some additional materialsThe hardness of a mineral is how resistant it is to scratching. Hardness is a very useful property in mineral identification and is usually stated in terms of the Mohs scale. This scale ranks 10 common minerals in ascending order from the softest to the hardest. They are (1) talc (2) gypsum (3 Chat OnlinecalciteStudents Britannica Kids Homework Help
Britannica Kids Students. Login Search Subscriber features. Email (Subscriber Feature) Cite (Subscriber Feature) The mineral calcite is a form of calcium carbonate. Transparent calcite is sometimes called Iceland spar.
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Calcite is one of the most widely distributed minerals on the Earth s surface. It is a common constituent of sedimentary rocks limestone in particular. It is also the primary mineral in metamorphic marble. It is a chemical or biochemical calcium carbonate corresponding to the formula CaCO 3 and belongs to the carbonate mineral.
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Calcite mineral Britannica. Calcite the most common form of natural calcium carbonate (CaCO3) a widely distributed mineral known for the beautiful development and great variety of its crystals. It is polymorphous (same chemical formula but different crystal structure) with the minerals aragonite and vaterite and with
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Alabaster is a mineral or rock that is soft often used for carving and is processed for plaster powder. Archaeologists and the stone processing industry use the word differently from geologists.The former use is in a wider sense that includes varieties of two different minerals the fine-grained massive type of gypsum and the fine-grained banded type of calcite.
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CALCITE a mineral consisting of naturally occurring calcium carbonate (CaCO3) crystallizing in the rhombohedral system. With the exception of quartz it is the most widely distributed of minerals CALCITE a mineral consisting of naturally occurring calcium carbonate (CaCO3) crystallizing in the rhombohedral system. With the exception of quartz it is the most widely distributed of minerals while in the beautiful development and extraordinary variety of form of its crystals it is surpassed by none. Chat OnlineCalciteWikipedia
Etymology. Calcite is derived from the German Calcit a term coined in the 19th century from the Latin word for lime calx (genitive calcis) with the suffix -ite used to name minerals. It is thus Etymology. Calcite is derived from the German Calcit a term coined in the 19th century from the Latin word for lime calx (genitive calcis) with the suffix -ite used to name minerals. It is thus etymologically related to chalk.. When applied by archaeologists and stone trade professionals the term alabaster is used not just as in geology and mineralogy where it is reserved for a variety of Chat OnlineCalciteEncyclopedia
Britannica 1911. CalciteEncyclopedia. GEOGRAPHICAL NAMES CALCITE a mineral consisting of naturally occurring calcium carbonate CaCO 3 crystallizing in the rhombohedral system. With the exception of quartz it is the most widely distributed of minerals whilst in the beautiful development and extraordinary variety of form of its crystals
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A mineral species consisting of calcium and magnesium carbonate CaMg (CO 3) 2 and occurring as rhombohedral crystals or large rock-masses. Analyses of most wellcrystallized specimens correspond closely with the above formula the two carbonates being present in equal molecular proportions (C a C03 54.35 Mg C03 45.65 ).
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Dec 25 2012 · —The rock dolomite also known as dolomitic or magnesian limestone consists principally of the mineral of the same name but often contains admixture of other substances such as calcite quartz carbonate and oxides of iron argillaceous material and chert or chalcedony.
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The word or syllable spar in the names of minerals refers to bright surfaces particularly when due to noticeably good cleavage. Calcite is carbonate of lime and contains 44 carbon dioxide and 56 of lime it effervesces (fizzes) with acids even when the acids are mixed with water i.e. diluted.
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mineralTungstate and Molybdate MineralsSalts of tungstic acid and molybdic acid are respectively called tungstates and molybdates. Tungsten (or wolfram) a metal used in the manufacture of electric lightbulbs steel alloys and magnets is obtained chiefly from two minerals. These are scheelite or calcium tungstate and wolframite which is a mixed tungstate of the elements manganese
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Calcite also occurs widely in veins some of the veins are wholly or largely calcite
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Calcite mineral Britannica. Calcite is also the chief component of marls travertines calcite veins most speleothems (cave deposits) many marbles and carbonatites and some ore-bearing veins Calcite is the stable form of CaCO 3 at most temperatures and pressur. Geologyrocks and mineralsUniversity of Auckland
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Aragonite widespread mineral the stable form of calcium carbonate (CaCO3) at high pressures. It may be distinguished from calcite the commoner form of calcium carbonate by its Aragonite widespread mineral the stable form of calcium carbonate (CaCO3) at high pressures. It may be distinguished from calcite the commoner form of calcium carbonate by its greater hardness and specific gravity. Aragonite is always found in Chat OnlineCalcite marble mineral Britannica
Other articles where Calcite marble is discussed calcite Origin and occurrence The resulting rocks are calcite marbles. Some calcite marbles however appear to have had dolostone Other articles where Calcite marble is discussed calcite Origin and occurrence The resulting rocks are calcite marbles. Some calcite marbles however appear to have had dolostone rather than limestone precursors i.e. the dolostone underwent dedolomitization during metamorphism. The calcite grains in some marbles have cleavage planes that are curved this is usually Chat OnlineCalcite Facts for Kids KidzSearch
Calcite is one of the most widely distributed minerals on the Earth s surface. It is a common constituent of sedimentary rocks limestone in particular. It is also the primary mineral in metamorphic marble. Calcite is one of the most widely distributed minerals on the Earth s surface. It is a common constituent of sedimentary rocks limestone in particular. It is also the primary mineral in metamorphic marble. It is a chemical or biochemical calcium carbonate corresponding to the formula CaCO 3 and belongs to the carbonate mineral. Chat Onlinespecial properties of calcite
Calcite which comes in dozens of colours is a form of calcium carbonate which is the mineral that makes up chalk. While its name comes from the German word calcit (meaning limestone) and only came into use relatively recently in the ancient world calcite was grouped together with gypsum and called "alabaster" for its fair milky colour.
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Alstonite also known as bromlite is a low temperature hydrothermal mineral that is a rare double carbonate of calcium and barium with the formula BaCa(CO 3) 2 sometimes with some strontium. Barytocalcite and paralstonite have the same formula but different structures so these three minerals are said to be trimorphous.
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Calcite exhibits an unusual characteristic called retrograde solubility in which it becomes less soluble in water as the temperature increases. When conditions are right for precipitation calcite forms mineral coatings that cement the existing rock grains together or it can fill fractures.
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Dec 22 2017 · 1911 Encyclopædia Britannica ARAGONITE one of the mineral forms of calcium carbonate (CaCO 3) the other form being the more common mineral calcite. It crystallizes in the orthorhombic system and the crystals are either prismatic or acicular in habit.
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Britannica Kids Students. Login Search Subscriber features. Email (Subscriber Feature) Cite (Subscriber Feature) The mineral calcite is a form of calcium carbonate. Transparent calcite is sometimes called Iceland spar.
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Dec 25 2012 · DOLOMITE a mineral species consisting of calcium and magnesium carbonate CaMg(CO 3) 2 and occurring as rhombohedral crystals or large rock-masses.Analyses of most well-crystallized specimens correspond closely with the above formula the two carbonates being present in equal molecular proportions (CaCO 3 54.35 MgCO 3 45.65 ).Normal dolomite is thus not an
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CALCITE a mineral consisting of naturally occurring calcium carbonate (CaCO3) crystallizing in the rhombohedral system. With the exception of quartz it is the most widely distributed of minerals while in the beautiful development and extraordinary variety of form of its crystals it is surpassed by none.
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Aragonite is a carbonate mineral one of the three most common naturally occurring crystal forms of calcium carbonate Ca C O 3 (the other forms being the minerals calcite and vaterite). It is formed by biological and physical processes including precipitation from marine and freshwater environments.
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calciteOrigin and occurrenceA large percentage of the calcite in rocks was deposited in sedimentary environments consequently calcite is a constituent of several diverse sediments calciteOrigin and occurrenceA large percentage of the calcite in rocks was deposited in sedimentary environments consequently calcite is a constituent of several diverse sediments sedimentary rocks and their metamorphosed products. A minor amount of the Earth s calcite is of magmatic (i.e. igneous) origin it is the chief constituent of the rare rock called carbonatite. Calcite Chat Onlinewhat is calcite texture
Calcite mineral Britannica. Calcite is also the chief component of marls travertines calcite veins most speleothems (cave deposits) many marbles and carbonatites and some ore-bearing veins Calcite mineral Britannica. Calcite is also the chief component of marls travertines calcite veins most speleothems (cave deposits) many marbles and carbonatites and some ore-bearing veins Calcite is the stable form of CaCO 3 at most temperatures and pressur. Geologyrocks and mineralsUniversity of Auckland Chat Online
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