-
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.
Did You Know We Offer Custom Bases?
Learn MoreMiss this auction? Buy Groutite mineral specimens on iRocks.com
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) |