Groutite

Robert Mine, Cuyuna Range, Crow Wing Co., Minnesota, USA
Ex. Kurt Hefendehl
Cabinet, 12.1 x 10.1 x 6.3 cm
Start Time: 10/19/2023 7:00:00 pm (CDT)
End Time: 10/26/2023 6:30:00 pm (CDT)
Auction Closed
Winning Bid: $378

Item Description

These are superb crystals for the species from a remote, but important locality on the iron ranges of northern Minnesota that produced some of the best Groutites for the species! These lustrous, bladed, jet-black crystals are razor-sharp and have a mirror-like luster to them and are between 2 to 4 mm in size. This is a great Cabinet-sized piece loaded with crystals right down the center of an elongate vug in a Hematite-Quartz matrix. The Groutite crystals are from 2 to 5 mm in size and are an incredibly lustrous and brilliant black. Groutite is an uncommon manganese-oxyhydroxide and good crystals of the species like this are very rare! This small, now defunct locality gave up some major specimens such as this piece, produced from a one pocket find, and remain some of the best-of-species for crystal size and distinction of habit. This is a rare, large, cabinet sized specimen with a gorgeous protected pocket of the groutite.

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Bidding History

Bid Amount Bid Time
$378 10/26/2023 6:19:21 pm (CDT)
$368 10/26/2023 6:12:09 pm (CDT)
$358 10/26/2023 5:12:01 pm (CDT)
$350 10/26/2023 5:12:01 pm (CDT)
$348 10/26/2023 4:46:25 pm (CDT)
$338 10/26/2023 4:46:25 pm (CDT)
$335 10/26/2023 4:42:19 pm (CDT)
$325 10/26/2023 4:42:19 pm (CDT)
$320 10/26/2023 3:54:01 pm (CDT)
$310 10/26/2023 3:53:03 pm (CDT)
$300 10/26/2023 3:53:03 pm (CDT)
$285 10/26/2023 3:32:35 pm (CDT)
$275 10/26/2023 3:32:35 pm (CDT)
$270 10/26/2023 3:32:28 pm (CDT)
$260 10/26/2023 3:32:28 pm (CDT)
$230 10/26/2023 3:32:20 pm (CDT)
$220 10/26/2023 3:32:19 pm (CDT)
$210 10/26/2023 12:39:29 pm (CDT)
$200 * 10/26/2023 12:39:22 pm (CDT)
$200 * 10/26/2023 12:39:22 pm (CDT)
$185 10/26/2023 11:15:14 am (CDT)
$175 10/26/2023 11:15:14 am (CDT)
$140 10/26/2023 11:15:04 am (CDT)
$130 10/26/2023 11:15:04 am (CDT)
$119 10/26/2023 6:28:03 am (CDT)
$109 10/26/2023 6:28:03 am (CDT)
$107 10/26/2023 6:27:50 am (CDT)
$97 10/26/2023 6:27:50 am (CDT)
$87 10/24/2023 11:32:05 pm (CDT)
$77 10/24/2023 11:32:05 pm (CDT)
$76 10/22/2023 9:59:24 pm (CDT)
$66 10/22/2023 9:59:24 pm (CDT)
$49 10/20/2023 5:27:18 pm (CDT)
$44 10/20/2023 5:27:18 pm (CDT)
$30 10/20/2023 2:08:43 pm (CDT)
$25 10/20/2023 1:28:12 pm (CDT)
$22 10/20/2023 1:28:12 pm (CDT)
$10 10/20/2023 2:27:34 am (CDT)
* Proxy Bid Battle: In the event of two customers inputting matching proxy bids, the leading bid goes to the earliest of the two proxy bids. Tie winners are shown in bold.