2 definitions found From The Collaborative International Dictionary of English v.0.48 [gcide]: Calcite \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] From The Collaborative International Dictionary of English v.0.48 [gcide]: Calc-spar \Calc"-spar`\, n. [G. kalk (L. calx) lime E. spar.] Same as {Calcite}. [1913 Webster]
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