Copper minerals from worldwide localities

Copper minerals, especially the secondary compounds frequently found in the oxidized zones of Cu-bearing ore deposits, are safely placed among the all-time favourites of mineral collectors all over the world. The stunning variety of their colours and shapes has fascinated people since the first days of Cu mining. Some pretty examples for this diversity are provided by the specimen offered below, many of which stem from nowadays defunct mining locales.

JW-018 - Tennantite, Chalcopyrite & Quartz - 550 €

Cobre Mine, Concepción del Oro, Mun. de Concepción del Oro, Zacatecas, Mexico

Size: 13 x 12 x 9 cm



Rich clusters of tennantite crystals up to 2 cm size on white, drusy quartz crystals. One side of the specimen is covered with fine speckles of chalcopyrite. The tennantite crystals exhibit many faces with pristine metallic luster.

Cerussite and Malachite on Chalcocite - sold

Tsumeb, Otjikoto Region, Namibia

Size: 7.5 x 4.5 x 4.5 cm

360° video

A sculptural assembly of corroded chalcocite blades carries numerous translucent and lustrous cerussite crystals of up to 1 cm size. A botryoidal malachite coating covers most of the chalcocites and parts of some cerussites. Showy all around, this is a flawless specimen of attractive and rare paragenesis.

Calcite & Copper - sold

Houghton Co., Michigan, USA

Size: 8 x 6 x 4 cm

360° video

Heavily copper-included calcite scalenohedra and native copper on a matrix of basalt and prehnite. There are minute dispersed bits of copper giving the calcites themselves a rich copper background color overall, and still showing bright flecks of native copper inside. The main scalenohedron measures 2.5 cm. The specimen most likely stems from the Quincy Mine, where such pieces were found mostly in the late 1800s and early 1900s. Comes with former Cureton label.

Azurite (Chessylite) - sold

Chessy-les-Mines, Le Bois d'Oingt, Rhône, Auvergne-Rhône-Alpes, France

Size:  7.5 x 5.5 x 2.5 cm

360° video

Sparkling, blocky azurite crystals in the vug of a matrix piece fully covered with a bright-blue microcrystalline azurite coating. 

Azurite with Malachite ps. Azurite - sold

Tsumeb, Otjikoto Region, Namibia

Size: 9.5 x 6.5 x 5.5 cm

360° video 

A historic specimen from the early years of mining in Tsumeb at the beginning of the 20th century. A sharp-edged, filligree cluster of malachite ps. azurite resides in a nest of sharp azurite needles. The azurite crystals are translucent and under strong illumination exhibit intense blazing-blue color. Some minor contacts along the periphery. Ex E. M. Gunnell collection.

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