Franklinite, Willemite
Specimen ID: HAM-3RU
Franklinite : Zn2+Fe3+2O4
Willemite : Zn2SiO4
Photo added to mindat.org
“Classic combination of franklinite and willemite crystals carefully worked out of the calcite matrix. The old term for this colored willemite was "troostite".
Specimen is 11 cm by 10 cm. ”
Steven Kuitems - 20th August 2012
Photo added to mindat.org
“Classic combination of franklinite and willemite crystals carefully worked out of the calcite matrix. The old term for this colored willemite was ”
Steven Kuitems - 20th August 2012
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