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Sphalerite, Calcite and Dolomite with Quartz
Calcite up to 1 cm.
(Autor: Bob Harman)

Former State Route 37 road cuts, Bloomington (North), Monroe County, Indiana, USA
Sphalerite, Calcite and Dolomite with Quartz
Calcite up to 1 cm.
(Autor: Bob Harman)

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