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Nickel–Strunz classification -05- carbonates. [] Hanksite, Na 22 K (SO 4) 9 (CO 3) 2 Cl, one of the few minerals that is considered a carbonate and a sulfate. Photomicrographs of a thin section containing carbonate vein in mica rich rock. In cross-polarized light on left, plane-polarized light on right.
In organic chemistry a carbonate can also refer to a functional group within a larger molecule that contains a carbon atom bound to three oxygen atoms, one of which is double bonded. These compounds are also known as organocarbonates or carbonate esters, and have the general formula R−O−C (=O)−O−R′, or RR′CO3.
Category. : Carbonates. Wikimedia Commons has media related to Carbonates. Carbonates are salts, esters, and natural minerals with the carbonate anion (CO 32−). They tend to be of a basic pH.
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Calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (CaCO 3). It is a very common mineral, particularly as a component of limestone. Calcite defines hardness 3 on the Mohs scale of mineral hardness, based on scratch hardness comparison. Large calcite crystals are used in optical equipment, and limestone composed ...
Dolomite is a double carbonate, having an alternating structural arrangement of calcium and magnesium ions. Unless it is in fine powder form, it does not rapidly dissolve or effervesce (fizz) in cold dilute hydrochloric acid as calcite does. [9] Crystal twinning is common. Solid solution exists between dolomite, the iron -dominant ankerite and ...
Carbonate rocks are a class of sedimentary rocks composed primarily of carbonate minerals. The two major types are limestone, which is composed of calcite or aragonite (different crystal forms of CaCO 3), and dolomite rock (also known as dolostone), which is composed of mineral dolomite (CaMg (CO 3) 2). They are usually classified based on ...
Carbonate minerals are those minerals containing the carbonate ion: CO 3. Subcategories. This category has the following 3 subcategories, out of 3 total. A. Alabaster ...