$165Median
518Sold (12 mo)
$200Last sale
Pyrite from Leonard Mine, Butte Mining District, Montana, USA
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Classic specimen for this area, bright lustrous golden crystals of pyrite to 2.3 and centimeter in size covering the top of matrix. This is in good condition with very minimal micro-damage present. The specimen comes with a previous label from the collection of Ray DeMark.The Leonard Mine in Butte, Montana, is situated within the rich Late Cretaceous quartz monzonite of the Boulder batholith, where extensive hydrothermal activity formed complex veins and fractured ore zones containing abundant copper minerals. Developed in the late 19th century and named after mining executive Leonard Lewisohn, the mine became a major underground producer of copper and associated metals during the height of the Butte mining district's industrial boom. Over the decades, it evolved into a prominent underground workings site celebrated historically for both its massive ore output and as a frequent destination for visiting dignitaries, before deep underground operations across the district permanently ceased.
Product details
SpeciesPyrite
SizeSmall Cabinet
Dimensions7.8 x 6.3 x 3.2 cm
Added on10/03/2026
LocalityUSA, Montana, Leonard Mine
Current owner
Unknown Owner
- Acquired
- Oct 2026
Previous owners
| Date | Collector | Acquisition price |
|---|---|---|
| — | Weinrich Minerals | Not disclosed |
Learn more
Mineral guide
Learn about Pyrite
brilliant metallic luster, perfect cubes, and golden color; collectors prize affordable pieces to top specimens, with Navajún and Huanzala localities.Regional guide
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