Sphalerite with Pyrite
Unknown Owner
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An interesting locality example for the species, crystallized black sphalerite covering one side of matrix with crystalline golden pyrite. In good condition.The Browns Bottoms Quarry near East Dubuque, Illinois, is a limestone quarry located along the Mississippi River in an area historically associated with lead and zinc mineralization. Although primarily operated as a surface quarry for crushed stone, the site lies within the Upper Mississippi Valley region, where sphalerite and other sulfide minerals are known to occur. Specimens of sphalerite from the quarry are considered minor but representative of the regional geology, typically occurring in association with carbonate host rock. While not a major source of collectible minerals, the locality is of interest to collectors for its connection to the broader mineralized district and occasional occurrences of zinc minerals such as sphalerite.
Product details
SpeciesPyrite, Sphalerite
SizeCabinet
Dimensions14.0 x 7.0 x 3.5 cm
Added on04/03/2026
LocalityUSA, Illinois, Browns Bottoms Quarry
Known provenance
| Date | Collector | Acquisition price |
|---|---|---|
| 04/2026 | Unknown Owner | $175.00 |
| — | 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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