Chamosite (''Thuringite'') pseudomorph after Almandine

Michigamme Mine, Michigamme, Marquette iron range, Marquette County, Michigan, USA
Toenail, 3.2 x 2.2 x 1.8 cm
Start Time: 09/01/2022 7:00:00 pm (CDT)
End Time: 09/08/2022 6:45:00 pm (CDT)
Auction Closed
Winning Bid: $40
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Item Description

Here we have a cool old-time "floater" crystal of elongated dodecahedral Almandine Garnet which has been pseudomorph by what used to be called Thuringite. The term Thuringite is an outdated name for the ferroan variety of Chamosite, a Chlorite Group mineral. This piece is a fairly sharp, crystal with a resinous luster, free of matrix. This is a classic material from the old iron mines of Marquette County. Rare and excellent historic material. I'm told that this material is also magnetic, but I couldn't get it to react to a magnet here at the office, so maybe it's only slightly magnetic.

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Bidding History

Bid Amount Bid Time
$40 09/08/2022 5:15:20 am (CDT)
$35 09/08/2022 5:15:20 am (CDT)
$30 09/08/2022 5:15:10 am (CDT)
$25 09/08/2022 5:15:10 am (CDT)
$20 09/02/2022 11:01:21 am (CDT)
$15 09/02/2022 11:01:21 am (CDT)
$10 09/02/2022 5:39:19 am (CDT)