from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A triclinic-pinacoidal yellow mineral containing hydrogen, hydrogen, magnesium, nitrogen, oxygen, and phosphorus.
from The Century Dictionary and Cyclopedia
- n. A hydrous phosphate of ammonium and magnesium, occurring in triclinic crystals in the guano of the Skipton caves of Victoria in Australia.
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