Botryogen with Halotrichite

Alfredo Pit, Rio Tinto Mines, Minas de Riotinto, Huelva, Andalusia, Spain
Ex. Dr. Vasco Trancoso
Small Cabinet, 7.3 x 6.7 x 5.7 cm
Start Time: 05/25/2023 7:30:00 pm (CDT)
End Time: 06/01/2023 6:55:00 pm (CDT)
Auction Closed
Winning Bid: $71

Item Description

A rarely seen combo piece from the Alfredo Pit (part of the Rio Tinto Mines) in Huelva, Andalusia, Spain featuring attractive rich reddish-orange colored crystals of Botryogen assocaited with "silky" white acicular crystals of Halotrichite plus some pale yellow Copiapite. Although the Alfred Pit was a Pyrite mine (it's now closed), it produced a fair number of colorful secondary sulfate species. The crystals are best viewed under magnification. A hard to find specimen for any fan of rarities or sulfate minerals. From the collection of Vasco Trancoso, a medical doctor and prominent mineral collector from near Lisbon, Portugal (https://www.mindat.org/user-11954.html). He assembled his mineral collection over the course of 60 years, and built a fine worldwide display collection that we recently purchased. This piece is pictured on mindat.org at https://www.mindat.org/photo-200347.html

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Bidding History

Bid Amount Bid Time
$71 06/01/2023 6:49:14 pm (CDT)
$61 06/01/2023 6:44:54 pm (CDT)
$51 06/01/2023 6:44:26 pm (CDT)
$50 06/01/2023 6:44:26 pm (CDT)
$45 06/01/2023 12:15:32 pm (CDT)
$40 05/30/2023 8:41:57 pm (CDT)
$35 05/30/2023 2:42:24 pm (CDT)
$33 05/30/2023 2:42:24 pm (CDT)
$30 05/30/2023 2:42:16 pm (CDT)
$25 05/30/2023 2:42:16 pm (CDT)
$20 05/28/2023 2:34:10 pm (CDT)
$15 05/26/2023 7:51:51 pm (CDT)
$11 05/26/2023 7:51:51 pm (CDT)
$10 05/26/2023 12:37:10 am (CDT)