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LOT 1752
Natural History - Australian Boulder Opal Specimen
3/8 in. (0.91 grams, 10 mm).
In cut dark brown ironstone matrix, displaying a beautiful play of colour. [No Reserve]
ProvenanceProperty of a UK gentleman, acquired in the 1970s.
Property of an East Sussex, UK, gentleman.
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AUCTIONS:
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Natural History - Knightia Fossil Fish
Eocene Period, circa 56-33 million years B.P.Sold for (Inc. bp): £46
The Knightia alta specimen on a rectangular sandstone matrix. 140 grams, 10 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. -
![Natural History - Two Bags of Blue Calcite Mineral Specimen Group [100]](https://timelineauctions.com/upload/images/items/small/208031-s.jpg)
Natural History - Two Bags of Blue Calcite Mineral Specimen Group [100]
Sold for (Inc. bp): £7
Comprising variously sized unpolished chunks in labelled bags. 983 grams total, 19-32 mm
From Mexico. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's). -
Natural History - Historic Cassiterite Crystal Specimen Collection
Sold for (Inc. bp): £46
Comprising three samples with mainly black prismatic crystals. 281 grams total, 33-72 mm
Collected 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.
