$225Median
607Sold (12 mo)
$290Last sale
Sphalerite from Denton Mine, Harris Creek Mining Sub-District, Hardin County, Illinois, USA
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A neat combination specimen from the early 1990s. A fluorite crystal is completely covered with sparkling lustrous crystals of galena. Scattered across this are slightly translucent crystals of sphalerite. This is in terrific condition.The Denton Mine, located in the Cave-in-Rock District of Hardin County, Illinois, is a premier locality within the Illinois-Kentucky Fluorspar District. Geologically, it is a Mississippi Valley-Type (MVT) deposit hosted within Mississippian-aged limestones, specifically the Ste. Genevieve and St. Louis formations. The mineralization occurred when fluorine-rich hydrothermal fluids moved through the regional fault systems, creating large solution cavities. Historically, the mine was operated by the Ozark-Mahoning Company and began production in the late 1970s, quickly becoming one of the most significant producers of acid-grade fluorspar in the United States. It remained a vital industrial site until the mid-1990s, when the decline of the domestic fluorspar industry led to the permanent cessation of mining operations in the district.
Product details
SpeciesSphaleriteFluoriteGalena
SizeSmall Cabinet
Dimensions5.5 x 4.0 x 2.5 cm
Added on07/16/2026
LocalityUSA, Illinois, Denton Mine
Current owner
Unknown Owner
- Acquired
- Oct 2026
Previous owners
| Date | Collector | Acquisition price |
|---|---|---|
| — | Weinrich Minerals | Not disclosed |
Learn more
Mineral guide
Learn about Sphalerite
a spectrum of colors and crystal forms, resinous to adamantine luster, gemmy on matrix; prized by collectors for iconic localities and displays.Regional guide
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