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LOT 2235
Natural History - Historic Green Mimetite Crystal Formation
2 3/8 in. (46.3 grams, 62 mm).
With small slender crystals on a matrix. [No Reserve]
ProvenanceCollected in person from various parts of the world mainly between 1957-1966.
From the private mineral collection of Stephen Atkinson, Harpenden, UK.
Accompanied by a copy of a letter from the vendor giving details of him collecting these minerals throughout his life.
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AUCTIONS:
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LOT 2235
Natural History - Historic Green Mimetite Crystal Formation
Sold for (Inc. bp): £13
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![Natural History - Rose Quartz Polished Pebble Collection [38]](https://timelineauctions.com/upload/images/items/small/208005-s.jpg)
Natural History - Rose Quartz Polished Pebble Collection [38]
Sold for (Inc. bp): £13
Comprising various sizes, some translucent. 1.11 kg total, 22-36 mm
Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's). -
Natural History - Large Size Cut and Polished Pink Agate Crystal Geode Slice
Sold for (Inc. bp): £52
With enhanced pink-colour and also showing translucent to opaque quartz crystals. 539 grams, 23.2 cm
Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's). -
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Natural History - Large Multi Fossil Fish Plate
Eocene Period, circa 56-33 million years B.P.Sold for (Inc. bp): £338
The large sandstone matrix with five Knightia alta specimens. 8.25 kg, 50.5 x 38 cm
From a Lincolnshire, UK, collection.
In southwest Wyoming (and parts of Colorado and Utah) in the Green River Formation are found some of the world's most outstanding specimens of fossil fish. The Green River system was composed of three lakes: Lake Ulinta, Lake Gosiute and Fossil Lake. These Eocene lakes lay in a series of intermountain basins formed by geological events that uplifted the Rocky Mountains during the early Tertiary time. The climate was much different from the desert-like climate of this area today. Both the fauna (crocodiles, alligators, boa constrictors and some subtropical fish families) and the flora (such as large palm trees) indicate a climate much like that found along the Gulf Coast today. Large amounts of ash found in the sediments indicate that volcanoes were particularly active at this time.
