Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun An orthorhombic mineral form of crystalline calcium carbonate, dimorphic with calcite.
from The Century Dictionary.
- noun Calcium carbonate crystallizing in the orthorhombic system.
from the GNU version of the Collaborative International Dictionary of English.
- noun (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.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun mineralogy A
saline evaporite consisting ofanhydrous calcium carbonate with thechemical formula Ca C O 3; it isdimorphous withcalcite .
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a mineral form of crystalline calcium carbonate; dimorphic with calcite
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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Over time, the oyster wraps the grain in successive layers of aragonite, giving birth to a rare pearl.
Ariston Anderson: A Journey Through the World of Tahitian Pearls Ariston Anderson 2011
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They wandered through the Big Room, mesmerized by the translucent, calcite soda straws in the Doll's Theater, transfixed by threads of aragonite — sharp as needles — that spun around The Temple of the Sun.
The Devil's Inkwell 2010
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For example: aragonite, diamond, ice, olivine … found on Earth only, found on Earth and in meteorites only, found/detected in the solar system only, only one detected beyond the solar system.
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I think aragonite, olivine and ice have hexagonal crystals whereas diamond has octahedral.
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A: aragonite several answers, e.g. it's the only one found only on Earth, so far; it's the only one known to be made by biological processes
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Also, diamond has no oxygen atoms; ice (H2O) has one oxygen atom; aragonite (CaCO3) has three oxygen atoms; olivine ((Mg, Fe)2SiO4) has four oxygen atoms.
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Therefore, the best order to arrange those four items are: diamond, ice, aragonite, olivine.
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They should probably be ordered according to hardness: diamond, olivine, aragonite, ice.
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I'd order them in order of appearance: diamond (primordial), olivine (one of the earliest condensates), ice (a late condensate), aragonite (post-planet formation).
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Changes will be much more pronounced in areas such as the Southern Ocean, which will become undersaturated with respect to aragonite in 2050.
Ocean acidification 2009
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