Copper

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Copper (nicknamed the “Grasshopper”), 38 cm, from Rockland, Ontonagon County, Michigan. Ex J. T. Reeder collection. Photography by G. Robinson and J. Jaszczak.

Product details

SpeciesCopper

SizeMuseum

Dimensions38.0 cm

Added on02/13/2026

LocalityUSA, Michigan, Ontonagon County

Publications

Mineralogical Record Mineral Collections In American Midwest page 206

Current owner

A. E. Seaman Mineral Museum

Added by the community · Not a registered member

Previous owners

Date	Collector	Acquisition price
—	J. T. Reeder	Not disclosed

Comments

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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