• Calcite with Native Copper
  • Calcite with Native Copper
  • Calcite with Native Copper
  • Calcite with Native Copper

Calcite with Native Copper

$6,000.00   €5,333  £4,540.00 approx.  

This specimen is priced in US dollars, all other prices are approximate.

ID: CC21154
The copper mines which cover much of the Keweenaw Peninsula in Upper Michigan are a prominent favourite amongst many collectors and is famed for its world-class Native Copper and associated minerals.  Right up there with the very best are the almost unique Calcite crystals with included Native Copper, what I and many others consider objects of true beauty.  The remarkable thing about these much sought specimens is the Copper is completely unoxidized, the colour of bright new copper pipes and a colour which under any other circumstances would be considered false following acid etching of commercial low budget specimens.  From Centennial mine in Houghton County, this show-stopping small cabinet specimen is built from several large flattened rhombic Calcite crystals to 7.5 cm tall and tightly intergrown forming a single multi-terminated prism.  Around the base and one side is ingrained matrix debris in the form of milky white cleaved Calcite and verdigris green oxidised traces of Native Copper.  Filling a good two thirds of the translucent light grey Calcite display crystals is bright metallic copper coloured Native Copper which reflect back transmitted light producing a stunning internal glow.  The Native Copper inclusions delineate former phantom Calcite crystals.  A fabulous Calcite with included Native Copper from Keweenaw Copper Country, USA.


9.4 × 6.5 × 4.3 cm
Calcite, Native Elements
Centennial Mine, Centennial Heights, Houghton County, Michigan, USA, North America

Minerals on Specimen

Minerals on specimen
Calcite, Native Copper

Related Mineral Specimens

Calcite on Quartz
 Geevor Mine, Pendeen, Cornwall, England, Europe
Geevor/Levant mine has given up some of the best specimens of Calcite before its closure in...
Malachite coating Cuprite crystals
 Onganja, Seeis, Windhoek District, Namibia, Africa
A now classic from the Onganja mining area in Namibia of Malachite coating large Cuprite...
Cobaltoan Calcite
 Mashamba West Mine, Kolwezi, Katanga (Shaba), DR Congo (Zaire), Africa
A stunning vivid pinkish cobalt-purple crystal of translucent Cobaltoan Calcite measures to 1.6 cm,...
Baryte with Calcite
 Magma Mine, Superior, Pioneer District, Pinal Mts, Pinal Co., Arizona, USA
Classic crystals of Baryte from the Magma Mine, Arizona, USA. Well-developed thick tabular crystals...