Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A foliated or chalk-like variety of calcite.

from the GNU version of the Collaborative International Dictionary of English

  • n. See under calcite.

from The Century Dictionary and Cyclopedia

  • n. A subvariety of calcium carbonate or calcite, popularly known as foam, earth-foam, or foam-spar, occurring in small masses, solid, or tender and friable.

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