from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A mineral with monoclinic crystals of the chemical formula Al2(PO4)(OH)3.

from The Century Dictionary and Cyclopedia

  • n. A hydrated phosphate of aluminium occurring in tabular monoclinic crystals and in cleavable masses with strong pearly cleavage: first found in Sweden, and now also in Bolivia.


From Ancient Greek αὐγή (auge, "luster"), named in 1868.[2] (Wiktionary)


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