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calcite 音标拼音: [k'æls ,ɑɪt] n. 方解石 方解石 calcite n 1: a common mineral consisting of crystallized calcium carbonate; a major constituent of limestoneCalcite \ Cal" cite\ ( k[ a^] l" s[ imac] t), n. [ L. calx, calcis, lime.] ( Min.) Calcium carbonate, or carbonate of lime. It is rhombohedral in its crystallization, and thus distinguished from aragonite. It includes common limestone, chalk, and marble. Called also { calc- spar} and { calcareous spar}. [ 1913 Webster] Note: Argentine is a pearly lamellar variety; aphrite is foliated or chalklike; dogtooth spar, a form in acute rhombohedral or scalenohedral crystals; calc- sinter and calc- tufa are lose or porous varieties formed in caverns or wet grounds from calcareous deposits; agaric mineral is a soft, white friable variety of similar origin; stalaclite and stalagmite are varieties formed from the drillings in caverns. Iceland spar is a transparent variety, exhibiting the strong double refraction of the species, and hence is called doubly refracting spar. [ 1913 Webster] |
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