Willemite (Var: Troostite)

Willemite (Var: Troostite) : (Zn,Mn)₂SiO₄

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Locality: Sterling Mine, Sterling Hill, Ogdensburg, Franklin Mining District, Sussex Co., New Jersey, USA

Single reddish-brown willemite crystal 2 cm long in pink calcite matrix. Fluoresces bright green under UV illumination. The back side is incomplete due to contact with adjacent mineralization. Has old label from Paul Otto. Ex. D\'Esopo collection (Utica, NY).
Overall size of mineral specimen: 4.5x3x2 cm.
Size of individual crystals: 2 cm.

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Willemite (Var: Troostite)

Willemite (Var: Troostite) : (Zn,Mn)2SiO4

Willemite (Var: Troostite) : (Zn,Mn)₂SiO₄