| 释义 |
Dogtooth spar
| (Min.) | a variety of calcite, in acute crystals, resembling the tooth of a dog. See Calcite. |
See also: Dogtooth dogtooth spar
dogtooth spar: see calcitecalcite
, very widely distributed mineral, commonly white or colorless, but appearing in a great variety of colors owing to impurities. Chemically it is calcium carbonate, CaCO3, but it frequently contains manganese, iron, or magnesium in place of the calcium.
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