EM37AA1: Copper with Calcite - Lake Superior, Michigan USA
Copper with Calcite

Lake Superior, Keweenaw County, Michigan  USA

Specimen size: 16 × 6.5 × 1.5 cm = 6.30” × 2.56” × 0.59”
Main crystal size: 5.5 × 2.2 cm = 2.17” × 0.87”

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