BANNISTERITE                                                                                                               KCa(Fe²⁺,Mn²⁺,Zn,Mg)₂₀(Si,Al)₃₂O₇₆(OH)₁₆^.4-12H₂O                                                                 _{Back to List}

		Bannisterite dark brown micacious mineral with pink rhodochrosite, calcite, and sphalerite. Photo courtesy of the Franklin Mineral Museum Inc. Archive.
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