Calcite with Copper, Chrysocolla, Epidote - image 1
Calcite with Copper, Chrysocolla, Epidote - image 2
specimen video

Calcite with Copper, Chrysocolla, Epidote

Unknown Owner
Beautiful glassy gemmy scalenohedral crystals of calcite set on and epidote crystal matrix with minor chrysocolla. The calcite crystals are included with native copper. This is in good condition, very attractive in fine for this old classic.

Product details

Species
Copper, Calcite, Chrysocolla, EpidoteAbout Copper →
SizeSmall Cabinet
Dimensions6.0 x 3.0 x 2.0 cm
Added on10/29/2025
Locality
USA, Michigan, Keweenaw PeninsulaRegional guide →

Known provenance

DateCollectorAcquisition price
11/2025Unknown Owner$1,195.00
—Weinrich MineralsNot disclosed

Learn more

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.
Copper
Regional guide
Copper from Keweenaw Peninsula, Michigan, USA
The Keweenaw Peninsula is the classic native-copper locality: a place where copper was not merely an ore mineral locked in sulfides, but the metal itself—dense, malleable, and often sculptural—precipitated as copper, Cu, in billion-year-old volcanic rocks. For collectors, “Keweenaw copper” is a category unto itself. It can appear as wiry arborescent sprays, thick hackly sheets, crystal groups with sharp metallic faces, rounded glacial float nuggets, massive vein copper, copper-filled amygdules in basalt, and copper in conglomerate where the metal laces between volcanic pebbles.