2256

Poorman Formation, Homestake Mine Ore Specimens [199459]

Currency:USD Category:Collectibles / Rocks, Fossils & Minerals Start Price:50.00 USD Estimated At:100.00 - 200.00 USD
Poorman Formation, Homestake Mine Ore Specimens [199459]
CURRENT BID
0.00USD+ applicable fees & taxes.
ENTER YOUR MAXIMUM ABSENTEE BID[?]
You must bid at least
50.00USD
USD
50.00 x 1 unit = 50.00USDApplicable fees & taxes are added at checkout.
[?]Live Online Auction Starts In 2025 Aug 09 @ 08:00 (UTC-07:00 : PDT/MST)
FINAL AUCTION RECORD The Auctioneer’s podium notes serve as the final, legally binding record of the auction results, superseding any electronic bidding records. See Terms and Conditions
Three specimens. One with cut surface showing strong quartz and pyrite mineralization. The others show the intense nature of the folding, also with cut surfaces. Please see photos for dimensions. The Poorman Formation underlies the Homestake Formation and is composed of an upper sequence of sericite to biotite-dominant carbonate quartz and graphitic phyllites and a lower sequence of hornblende-plagioclase schist of tholeiitic affinity. Shows intense folding.
^
Date:
Country (if not USA):
State: South Dakota
City: Lead
Provenance: Homestake Mine Geologist Dave Shaddrick Collection