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Cummingtonite & Sideroplesite Ore Specimens, Homestake Mine [199452]

Currency:USD Category:Collectibles / Rocks, Fossils & Minerals Start Price:75.00 USD Estimated At:150.00 - 200.00 USD
Cummingtonite & Sideroplesite Ore Specimens, Homestake Mine [199452]
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[?]Live Online Auction Starts In 2025 Aug 09 @ 08:00 (UTC-07:00 : PDT/MST)
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This pair of ore specimens are important because these two minerals (cummingtonite and sideroplesite) are key indicator minerals for Homestake. Cummingtonite occurs in the sideroplesite. From the No. 11 ledge. Please see photos for dimensions.
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Date:
Country (if not USA):
State: South Dakota
City: Lead
Provenance: Homestake Mine Geologist Dave Shaddrick Collection