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Chalcedony ps. After fossilized snail
- Dakhla, Oued Ed-Dahab-Lagouira, Western Sahara, Morocco
- Thumbnail, 2.3 x 1.7 x 1.4 cm
- Start Time: 01/09/2015 6:30:00 pm (CST)
- End Time: 01/15/2015 6:30:00 pm (CST)
- Auction Closed
Item Description
A super-rare and superb combination pseudomorph from this very obscure African locale. The perfectly fossilized spiral Turritella-like snail has been replaced by lustrous, translucent, brown chalcedony and has a coating of white moganite, a very rare SiO2 modification, that is not uncommon as a minor component of finely crystalline chalcedony (as well as chert or flint) (MINDAT). The tip is slightly broken but I picked this from a small selection and most had quite a bit more damage. VERY RARE material. Value??