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LOT 2551
Very Large Deep Purple Amethyst Crystal Display Cluster
11 3/8 in. (5.15 kg, 29 cm).
A large mass of intertwined prismatic crystals in intense dark purple colour. [No Reserve]
ProvenanceFrom Brazil.
Ex Mineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
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AUCTIONS:
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![Mixed Large Mineral and Crystal Specimen Group [3]](https://timelineauctions.com/upload/images/items/small/228135-s.jpg)
Mixed Large Mineral and Crystal Specimen Group [3]
Sold for (Inc. bp): £13
Comprising: a geode section with large deep purple amethyst; a geode section with small amethyst crystals; hematite ore section. 3.28 kg total, 12.4-16 cm
Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.) -
![Purple Amethyst Crystal Point Group [20]](https://timelineauctions.com/upload/images/items/small/228018-s.jpg)
Purple Amethyst Crystal Point Group [20]
Sold for (Inc. bp): £7
Comprising twenty dark-coloured pyramidal points. 1.3 kg total, 33-56 mm
From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK. -
Knightia Fossil Fish in Matrix Group
Eocene Period, circa 58-36 million years B.P.Sold for (Inc. bp): £33
Comprising three rounded matrices, each with a Knightia alta specimen. 145 grams total, 63-74 mm
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.
