2025 Year in Review — Read the full article
Copper with Tenorite & Calcite - image 1
specimen video
Copper with Tenorite & Calcite - image 3
Copper with Tenorite & Calcite - image 4
Copper with Tenorite & Calcite - image 5
Copper with Tenorite & Calcite - image 6
Updated 18h ago
1
Copper with Tenorite & Calcite
An extremely sharp and rather large, equant copper crystal sits perfectly perched in a sparing calcite matrix in this gorgeous large miniature copper specimen from the classic Michigan copper district. It comes from the private collection of longtime dealer Keith Williams. Copper crystals of this sharpness, perfection, and balance are rare enough - but if you think about it, they usually are seen as singles or amidst clusters on massive copper. This is ISOLATED, not in a mass of ore or ugly secondary copper growth - and that makes all the difference in terms of aesthetics, levels, and values. This is a highly specialized piece, for the connoisseur copper collector who would appreciate such rarity in presentation. Of course, without great crystal shape, we also could not value it. The final subtely here is the patina: this has a fine and consistent patina of tenorite atop, which is sometimes either uneven or been previously stripped to clean the copper and make it too bright.
$2,450.00
Visa
Mastercard
American Express
PayPal
PayPal Pay In 4
Discover
Wire transfers available, to set up

Product details
Species
SizeSmall Cabinet
Dimensions5.2 x 4.5 x 3.9 cm
Locality
Phoenix Mine, Phoenix, Houghton Township, Keweenaw Co., Michigan, USA
SKUSM25-221
Listed on01/27/2026
Known provenance
Unknown dateNot disclosed
Species and Locality Wiki Pages
Collectors of Copper
From
To
Loading sales data...
All Sales
Loading specimens...