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from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A monoclinic manganese borate mineral with the chemical formula MnBO2(OH).

from The Century Dictionary and Cyclopedia

  • n. A hydrous borate of manganese, magnesiuin, and zinc (H(Mn,Zn,Mg)BO4) occurring in white fibrous forms at Franklin Furnace, Sussex county, New Jersey.


Sussex +‎ -ite, after Sussex County, New Jersey where it was first discovered in 1868. (Wiktionary)


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