$463Median
42Sold (12 mo)
$50Last sale
Strontianite
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An excellent floater cluster of crystallized strontianite. Brightly fluorescent. This is in good condition all around. Superb cabinet piece for the species and locality.The Minerva Mine No. 1, located in Hardin County, Illinois, is situated within the prolific Illinois-Kentucky Fluorspar District. The local geology is characterized by faulted Paleozoic sedimentary strata, primarily limestone and sandstone, which were intruded by Late Cretaceous igneous dikes and cut by mineralizing hydrothermal fluids. These ascending warm fluids deposited large quantities of fluorite, barite, sphalerite, and galena within fault zones and bedding-replacement deposits. Commercial mining operations at the site developed during the mid-twentieth century to supply critical fluorite for steel production and chemical manufacturing. Beyond its industrial output, the mine became world-famous among mineral collectors for producing exceptional specimens of deep purple fluorite, often associated with calcite, barite, and occasionally hydrocarbons, extracted from deep underground tunnels before its eventual closure.
Product details
SpeciesStrontianite
SizeCabinet
Dimensions13.5 x 11.0 x 4.0 cm
Listed on07/27/2026
LocalityUSA, Illinois, Minerva No. 1 Mine
SKU2312068
Current owner
WM
Weinrich MineralsFeatured
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Mineral guide
Learn about Strontianite
radiating sprays and translucent prisms; a rare connoisseur carbonate with localities Strontian, Oberdorf, Elmwood and strong collecting value.Regional guide
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