Mineral: Copper
Locality: Champion Mine, Painesdale, Houghton County, Michigan, USA
Dimensions: 9.5 x 7.5 x 13.5 cm / main crystal: 1.6 cm.

Description: Mass: 485 g MIM number:2202 Aesthetic group consisting of several copper “feathers” with perfect natural brown patina. Crystals are elongated along one or more of the cubic axes with repeated growth along their lengths, which results in this 3-dimensional arborescent form with "branches" at right angles to the "stem". It is rare to have so many “feathers” together in one piece: usually this locality just produces single copper “feathers” with no matrix. Photographer: AINU / Augustin de Valence Ex collections: Robert Hajenga (USA), David Johnson (USA)

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