from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A hydrous silicate of calcium, occurring in massive form of a white or bluish‐gray colour.
from The Century Dictionary and Cyclopedia
- n. In mineralogy, a hydrous silicate of calcium, occurring in massive form of a white or bluish-gray color. It is found at Tetela de Xonalta in Mexico.
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