Lot · Unidentified Fossils
Gilsonite Asphaltum 200 Mesh Powder 1/4 Pound
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Wed · May 20, 2026
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ZIP 805**
quartzpegmatite
12,198 ratings · 100.00% positive
Description
From the sellerFound in the Uinta formation in the Uinta basin. This material is mined and milled in Bonanza, Utah. Gilsonite is distinguished by it's solubility in organic solvents, low density and the brown streak when rubbed on paper.
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