from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A mineral formed by the interaction of guano with calcite and clay at a low pH, believed to be a precursor of apatite.
from the GNU version of the Collaborative International Dictionary of English
- n. A white or gray crystalline mineral consisting of the acid phosphate of calcium.
from The Century Dictionary and Cyclopedia
- n. A hydrated phosphate of calcium found in the guano of Aves Islands and Sombrero in the West Indies, in slender monoclinic crystals of a pale-yellow color.
Brush + -ite after American mineralogist George Jarvis Brush (1831-1912). (Wiktionary)