Fine Mineral Specimens

Borussia Minerals

Quality mineral specimens from Arizona's Fat Jack Mine.

Wulfenite on Matrix

Fat Jack Mine, Arizona

Featured Specimens

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Cuprite on Copper

Pearl Handle Pit, Ray Mine, Pinal County, Arizona, USA

$5,000

Copper with Cuprite

Ray Mine, Pinal County, Arizona, USA

$2,400

Chrysocolla ps. Azurite ps. Malachite

Bisbee, Cochise County, Arizona, USA

$850

Wulfenite

Rowley Mine, Maricopa County, Arizona, USA

$1,800

From Our Own Mine

The Fat Jack Mine

Borussia Minerals acquired Arizona's historic Fat Jack Mine in 2025. Known for producing exceptional wulfenite with distinctive orange-red tabular crystals, the Fat Jack is one of the most celebrated mineral localities in the American Southwest.

New discovery at the Fat Jack Mine — details coming soon

Get In Touch

Contact

Interested in acquiring a piece for your collection? We welcome inquiries from serious collectors and institutions.

borussiaminerals@gmail.com