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Stinkweed :: Stinkstone (n.) One of the varieties of calcite, barite, and feldspar, which emit a fetid odor on being struck; -- called also swinestone..

Calc-sinter :: Calc-sinter (n.) See under Calcite.

Dimorphism :: Dimorphism (n.) Crystallization in two independent forms of the same chemical compound, as of calcium carbonate as calcite and aragonite..

Dimorph :: Dimorph (n.) Either one of the two forms of a dimorphous substance; as, calcite and aragonite are dimorphs..

Calcite :: Calcite (n.) 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..

Ferrocalcite :: Ferrocalcite (n.) Limestone containing a large percentage of iron carbonate, and hence turning brown on exposure..

Calc-tufa :: Calc-tufa (n.) See under Calcite.

Allomorph :: Allomorph (n.) Any one of two or more distinct crystalline forms of the same substance; or the substance having such forms; -- as, carbonate of lime occurs in the allomorphs calcite and aragonite..

Aragonite :: Aragonite (n.) 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..

Veinstone :: Veinstone (n.) The nonmetalliferous mineral or rock material which accompanies the ores in a vein, as quartz, calcite, barite, fluor spar, etc.; -- called also veinstuff..

Shiver-spar :: Shiver-spar (n.) A variety of calcite, so called from its slaty structure; -- called also slate spar..

Nitro- :: Nitro- () A combining form (used also adjectively) designating certain compounds of nitrogen or of its acids, as nitrohydrochloric, nitrocalcite; also, designating the group or radical NO2, or its compounds, as nitrobenzene..

Amygdaloid :: Amygdaloid (n.) A variety of trap or basaltic rock, containing small cavities, occupied, wholly or in part, by nodules or geodes of different minerals, esp. agates, quartz, calcite, and the zeolites. When the imbedded minerals are detached or removed by decomposition, it is porous, like lava..

Rhodochrosite :: Rhodochrosite (n.) Manganese carbonate, a rose-red mineral sometimes occuring crystallized, but generally massive with rhombohedral cleavage like calcite; -- called also dialogite..

Pisolite :: Pisolite (n.) A variety of calcite, or calcium carbonate, consisting of aggregated globular concretions about the size of a pea; -- called also peastone, peagrit..

Calcareous :: Calcareous (a.) Partaking of the nature of calcite or calcium carbonate; consisting of, or containing, calcium carbonate or carbonate of lime..

Baryto-calcite :: Baryto-calcite (n.) A mineral of a white or gray color, occurring massive or crystallized. It is a compound of the carbonates of barium and calcium..

Paramorph :: Paramorph (n.) A kind of pseudomorph, in which there has been a change of physical characters without alteration of chemical composition, as the change of aragonite to calcite..

Spar :: Spar (n.) An old name for a nonmetallic mineral, usually cleavable and somewhat lustrous; as, calc spar, or calcite, fluor spar, etc. It was especially used in the case of the gangue minerals of a metalliferous vein..

Iceland Spar :: Iceland spar () A transparent variety of calcite, the best of which is obtained in Iceland. It is used for the prisms of the polariscope, because of its strong double refraction. Cf. Calcite..

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