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calcite
calcite
The Oxford Pocket Dictionary of Current English
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2009
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© The Oxford Pocket Dictionary of Current English 2009, originally published by Oxford University Press 2009. (Hide copyright information)
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cal·cite
/ ˈkalˌsīt/
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n.
a white or colorless mineral consisting of calcium carbonate. It is a major constituent of sedimentary rocks, can occur in crystalline form, and may be deposited in caves to form stalactites and stalagmites.
DERIVATIVES:
cal·cit·ic
/ kalˈsitik/ adj.
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Calcite vein-dikes of the Grenville Geological Province Ontario, Canada.
Magazine article from: Rocks & Minerals; 1/1/2006; ; 700+ words
; Calcite vein-dikes in the Grenville Geological Province...mineral specimens for more than one hundred years. Calcite vein-dikes, which are composed of a high percentage of predominantly calcite, have been significantly mobile at some point...
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Calcite: The Mineral With the Most Forms
Magazine article from: Mineralogical Record; 3/1/2005; ; 700+ words
; ...Michael Gray on faceted calcites, which nicely sums...the six huge faceted calcite gems pictured with the...objecting that "their" calcites have been slighted in...about the ubiquity of calcite? As the editors say...of the pictures show calcites from quite unfamiliar...
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Calcite: The Mineral With the Most Forms.(Book Review)
Magazine article from: The Mineralogical Record; 3/1/2005; ; 700+ words
; ...Michael Gray on faceted calcites, which nicely sums...the six huge faceted calcite gems pictured with the...objecting that "their" calcites have been slighted in...about the ubiquity of calcite? As the editors say...of the pictures show calcites from quite unfamiliar...
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Biogenic calcite-phosphorus precipitation as a negative feedback to lake eutrophication.(Report)
Magazine article from: Canadian Journal of Fisheries and Aquatic Sciences; 2/1/2009; ; 700+ words
; ...calcium carbonate in the mineral form of calcite (CaC[O.sub.3]). Such lakes are...America and Europe. In temperate climates, calcite precipitation increases greatly during...warming, which reduces the solubility of calcite, and enhanced photosynthetic uptake of...
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"Skunk" calcite: mineral paragenesis in an amethyst geode from Ametista, Rio Grande do Sul, Brazil.
Magazine article from: The Mineralogical Record; 3/1/2009; ; 700+ words
; ...contain crystals of "skunk" calcite, wherein microcrystals of...composing the stripes; the calcite crystals do not show similar...investigation of the skunk calcites relied primarily on SEM with an EDX system to analyze the calcite and to image and elucidate...
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MINERALOGY OF THE CALCITE-FLUORITE VEINS NEAR LONG LAKE, NEW YORK.
Magazine article from: The Mineralogical Record; 9/1/2000; ; 700+ words
; Interesting specimens of calcite, fluorite colored by dysprosium...attended the recent discovery of unusual calcite, fluorite and other minerals in veins...geology in the vicinity of the Long Lake calcite-fluorite veins is complex, consisting...
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Mineralogy of the calcite-fluorite veins near Long Lake, New York
Magazine article from: Mineralogical Record; 9/1/2000; ; 700+ words
; Interesting specimens of calcite, fluorite colored by dysprosium...attended the recent discovery of unusual calcite, fluorite and other minerals in veins...metamorphosed to granulite facies. The calcite-fluorite vein occurrence itself is...
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Direct observation of the transition from calcite to aragonite growth as induced by abalone shell proteins
Magazine article from: Biophysical Journal; 12/1/2000; ; 700+ words
; ...nucleation and growth of aragonite on calcite seed crystals in supersaturated solutions...the interaction of these proteins with calcite crystals did not observe this transition...observe changes in the atomic lattice on a calcite seed crystal after the introduction of...
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Calcite Twinning Stress Inversion Using OIM (EBSD) Data
Magazine article from: Geolines; 1/1/2005; ; 700+ words
; Deformation origin of calcite twin lamellae (e-twins) and their...calcitic rocks (or rocks containing calcite veins). Several methods of differential...experimental and field data. Orientation of calcite twin lamellae as well as the c-axis...
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Aragonite production in calcite seas: effect of seawater Mg/Ca ratio on the calcification and growth of the calcareous alga Penicillus capitatus
Magazine article from: Paleobiology; 7/1/2005; ; 700+ words
; ...three transitions between the low-Mg calcite (molar Mg/Ca <2) and aragonite + high-Mg calcite (molar Mg/Ca >2) nucleation fields...remaining within the aragonitic/high-Mg calcite nucleation field (molar Mg/Ca >...
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calcite, aragonite, dolomite
Book article from: The Oxford Companion to the Earth
calcite, aragonite, dolomite Calcite, aragonite, and dolomite are the most important and widespread...linked by a variety of cations, especially calcium and magnesium. Calcite and aragonite are polymorphs of calcium carbonate (CaCO 3...
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calcite
Book article from: The Columbia Encyclopedia, Sixth Edition
calcite , very widely distributed mineral, commonly...characterized by highly perfect cleavage. Calcite also occurs in a number of massive forms...luster. Iceland spar is clear, transparent calcite. Other important forms of the mineral...
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Calcite compensation depth
Book article from: A Dictionary of Earth Sciences
Calcite compensation depth (CCD) The depth in the sea at which the rate of dissolution of solid calcium carbonate equals the rate of...
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sedimentary geochemistry
Book article from: The Oxford Companion to the Earth
...iron oxides such as haematite; or calcite. Diagenesis may also lead to dissolution...algae. The hard parts are composed of calcite and aragonite, two mineral polymorphs of calcium carbonate. The calcite may contain some magnesium substituted...
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Limestone
Book article from: World of Earth Science
...composed almost entirely of the mineral calcite (calcium carbonate, CaCO 3 ). The precursor...Carbonate mud is made of microcrystalline calcite crystals (crystals of a few microns in...originally composed of CaCO 3 (in the form of calcite or a denser phase, aragonite). Carbonate...
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