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Sand-included Calcite crystals
- Rattlesnake Butte, Jackson County, South Dakota
- Small Cabinet, 8.2 x 6.8 x 4.7 cm
- Start Time: 10/08/2020 6:45:00 pm (CDT)
- End Time: 10/15/2020 6:30:00 pm (CDT)
- Auction Closed
- Winning Bid: $90
Item Description
A sculptural V-shaped or upright specimen of five intergrown striking calcite crystals. Fine-grained sandstone has richly included/replaced the aesthetic cluster of tapered calcite scalenohedrons. The two large impressive stout doubly terminated scalenohedrons are 7.3 and 7.0 cm long. These unusual pseudos come from a difunct South Dakota locale, Rattlesnake Butte (Devils Hill) near Interior. The crystals grew in the Miocene-aged sand matrix. Older material from a longtime east coast collection, collected in the 1960s and 70s and seldom seen today. The locality is now a National Natural Landmark (NNL) and is closed to collecting (MINDAT).
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Bidding History
| Bid Amount | Bid Time |
|---|---|
| $90 | 10/15/2020 6:13:50 pm (CDT) |
| $80 | 10/15/2020 4:56:24 pm (CDT) |
| $71 | 10/15/2020 4:56:24 pm (CDT) |
| $61 | 10/15/2020 2:03:20 pm (CDT) |
| $51 | 10/15/2020 2:03:20 pm (CDT) |
| $36 | 10/15/2020 12:46:28 pm (CDT) |
| $31 | 10/14/2020 9:52:00 pm (CDT) |
| $26 | 10/12/2020 11:48:17 pm (CDT) |
| $21 | 10/11/2020 2:16:18 pm (CDT) |
| $16 | 10/11/2020 9:55:44 am (CDT) |
| $15 | 10/11/2020 9:55:44 am (CDT) |
| $10 | 10/10/2020 4:52:47 am (CDT) |