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Structural Folds in Poorman Fm. Schist, Lead, SD [199190]

Currency:USD Category:Collectibles / Rocks, Fossils & Minerals Start Price:75.00 USD Estimated At:150.00 - 300.00 USD
Structural Folds in Poorman Fm. Schist, Lead, SD [199190]
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Group of specimens of the Poorman Formation at the surface at the Homestake Mine. These specimens were all collected by Shaddrick to illustrate the intense nature of folding and subsequent mineralization. Understanding the structure at the Homestake Mine was critical in understanding ore deposition. These specimens probably don't contain gold, but rather illustrate an important feature. Specimens range from 12 x 12 x 6" down to 3 x 3 x 9" approx. About 17lbs.
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Date:
Country (if not USA):
State: South Dakota
City: Lead
Provenance: Homestake Mine Geologist Dave Shaddrick Collection