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Illite ps. Leucite (rare - Cook Coll.)
- Kalehöyük, Kaman Dist., Kırşehir Prov., Turkey
- Small Cabinet, 6.0 x 5.7 x 5.6 cm
- Start Time: 11/03/2022 7:00:00 pm (CDT)
- End Time: 11/10/2022 6:30:00 pm (CST)
- Auction Closed
- Winning Bid: $210
Item Description
A rare and sharp pseudomorph from this obscure locale in Turkey. The textbook trapezohedral Leucite crystal (a Feldspathoid species) has been replaced by cream-colored Illite, a clay-like varietal of Muscovite. A complete all-around and pristine floater, with just a bit of embedded matrix on the back. These were originally sold as Orthoclase (Feldspar) after Leucite. X-ray diffraction studies by the Czech Geological Survey in 1999 showed that the major replacement material is Illite. Ex Bill and Anne Cook Collection. A very fine and rare pseudomorph from this uncommon locale.
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Bidding History
| Bid Amount | Bid Time |
|---|---|
| $210 | 11/10/2022 5:48:00 pm (CST) |
| $207 | 11/10/2022 5:48:00 pm (CST) |
| $160 | 11/10/2022 5:20:42 pm (CST) |
| $150 | 11/10/2022 5:20:42 pm (CST) |
| $107 | 11/10/2022 7:30:28 am (CST) |
| $97 | 11/10/2022 7:30:28 am (CST) |
| $80 | 11/06/2022 8:58:26 pm (CST) |
| $70 | 11/06/2022 2:43:50 am (CST) |
| $66 | 11/06/2022 2:43:50 am (CST) |
| $60 | 11/05/2022 10:21:15 pm (CDT) |
| $50 | 11/05/2022 10:21:15 pm (CDT) |
| $27 | 11/04/2022 2:34:44 pm (CDT) |
| $22 | 11/04/2022 2:34:44 pm (CDT) |
| $20 | 11/04/2022 12:49:47 pm (CDT) |
| $15 | 11/04/2022 12:49:47 pm (CDT) |
| $10 | 11/04/2022 3:42:42 am (CDT) |