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from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A manganese phosphate mineral occurring in granite pegmatites.

from The Century Dictionary and Cyclopedia

  • n. A rare phosphate of manganese and iron, occurring in small monoclinic crystals of a yellowish-brown to red color at Hureaux, near Limoges, in France, and at Branchville in Connecticut.


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