Definitions

from The Century Dictionary.

  • noun A mineral consisting of the silicate and carbonate of calcium (2Ca2S:O4.CaCO3). It occurs in cleavable granular masses of pale gray color at Velardeña, Durango, Mexico.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun mineralogy A granular mineral composed of a mixed silicate and carbonate of calcium

Etymologies

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