Calcite on Copper; Complex Calcite twin over Calcite phantom on Copper

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Calcite on copper, 4.4 cm, from the Quincy mine, Hancock, Houghton County, Michigan. Ex William Prychodko and Robert Rann collections (2000); Jeff Scovil photo. Complex calcite twin over calcite phantom on copper, 6.4 cm, from the Copper Falls mine, Owl Creek fissure, Keweenaw County, Michigan. Ex Clarence S. Bement collection (1900). From Stuart Wilensky (1999). Pictured in American Mineral Treasures (2008). Jeff Scovil photo.

Product details

SizeSmall Cabinet
Dimensions6.4 x 4.4 cm
Added on02/13/2026
Publications
  • Mineralogical Record Mineral Collections In American Northeast page 329

Known provenance

DateCollectorAcquisition price
Robert Rann (2000); Clarence S. Bement (1900)Not disclosed
William PrychodkoNot disclosed

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Copper
Mineral guide
Learn about Copper
native copper with spinel-twinned crystals and arborescences; notable from Lake Superior, Itauz, Dongchuan, Corocoro, prized for color and localities.
Regional guide
Copper from Copper Falls Mine
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