Enargite with Quartz - image 1
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Enargite with Quartz

Unknown Owner
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Leonard mine at Butte, in Silver Bow County, Montana, USA is one of the world's most important localities for Enargite (copper arsenic sulphide) crystals, but most specimens were mined a generation ago. That is likely when Martin Kershaw acquired this piece for his collection which he began assembling during the 1960s. It is true that the crystals are not the world's largest, but they provide an air of class, presenting the classic coffin-shaped flat termination with striated prism sides. Sat upon finely crystallized white Quartz, and with some Quartz overgrowth too, adds a lovely contrast in colour, making the Enargite crystals stand out even more. Size wise, the largest Enargite crystal reaches 1 cm across. There is a little damage around the periphery of the specimen, and a few slight nibbles to some of the central Enargite crystals but overall the Enargite crystals produce a really nice display. This really is a top quality miniature size Butte Enargite.

Product details

SizeMiniature
Dimensions4.5 x 4.0 x 3.0 cm
Added on12/10/2025

Known provenance

DateCollectorAcquisition price
07/2026Unknown Owner$400.00
Crystal ClassicsNot disclosed

Learn more

Mineral guide
Learn about Enargite
sharp metallic prisms, gunmetal color with iridescent tarnish; rare top specimens on quartz or pyrite from classic mines like Butte, Bingham.
Regional guide
Enargite from Leonard Mine
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