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Copper on Copper with Quartz
13 x 9 x 8.5 cm / main crystal: 4.5 cm
(Autor: MIM Museum)

Quincy Mine, Hancock, Houghton County, Michigan, USA
Copper on Copper with Quartz
13 x 9 x 8.5 cm / main crystal: 4.5 cm
(Autor: MIM Museum)

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