hisingerite definition

  • noun:
    • An iron silicate with a dark-brown or black color, formula Fe3+2Si2O5(OH)4·2H2O.
    • A soft black, iron ore, almost earthy, a hydrous silicate of metal.
    • A hydrous metal silicate, occurring in amorphous small public of a black to brownish-black shade and conchoidal fracture, in several localities of Scandinavia.
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