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from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A red, crystalline form of manganese arsenate, Mn22+(AsO4)(OH); polyarsenite.

from The Century Dictionary and Cyclopedia

  • n. A hydrous arseniate of manganese, occurring in cleavable massive forms, less often in monoclinic crystals, of a blood-red color: found at Pajsberg in Sweden. Also called polyarsenite.


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