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LOT 2532
Massive Green Malachite Boulder
8 5/8 in. (6.96 kg, 22 cm).
A cut section of botryoidal green malachite. [No Reserve]
ProvenanceFrom Congo, Central Africa.
Ex Mineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
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AUCTIONS:
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Cut and Polished Fossil Ammonite Half
Jurassic Period, Toarcian Stage, circa 184.2-174.7 million years B.P.Sold for (Inc. bp): £13
Dactylioceras commune with the inner face polished to display internal gas chamber. 7.68 grams, 36 mm
From a London, UK, gentleman's collection of ancient pottery and artefacts, 1990s. -
![Pyrite Crystal Chunk Group [100]](https://timelineauctions.com/upload/images/items/small/227948-s.jpg)
Pyrite Crystal Chunk Group [100]
Sold for (Inc. bp): £7
Comprising one hundred variously sized chunks. 1.41 kg total, 18-32 mm
From Peru. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK. -
Green River Fish Fossils
Eocene Period, circa 58-36 million years B.P.Sold for (Inc. bp): £33
Comprising three rounded matrices with Knightia alta fish fossils. 143 grams total, 8.6-10.5 cm
From Wyoming (Green River Formation), USA. 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.
