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hemafibrite

A brownish-red to garnet-red, transparent to translucent, hydrous manganese arsenate, Mn3(AsO4)(OH)3.H2O ; soon turns black; Mohs hardness, 3; sp gr, 3.50 to 3.65; rare; from Nordmark, Sweden.

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  • ed.young
  • (Milwaukee, United States)

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