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LOT 1890
Natural History - Cut and Polished Agate Crystal Geode End Group
2 7/8 - 3 1/4 in. (1.3 kg total, 73-83 mm).
Three cut agate geode sections with polished faces; various colours, including colour-enhanced specimens. [3, No Reserve]
ProvenanceMineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's).
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AUCTIONS:
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LOT 1890
Natural History - Cut and Polished Agate Crystal Geode End Group
Sold for (Inc. bp): £16
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Natural History - Amethyst Crystal Section
Sold for (Inc. bp): £33
A section of amethyst geode displaying some large purple crystals. 677 grams, 85 mm
From Brazil. Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's). -
Natural History - Knightia Fossil Fish in Matrix
Eocene Period, 56-33 million years B.P.Sold for (Inc. bp): £65
A rectangular sedimentary matrix displaying at least four fossil Knightia sp. fish. 624 grams, 16 cm
Ex 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 - Polished Whitby Dac Fossil Ammonite Group
Jurassic Period, 199-145 million years B.P.Sold for (Inc. bp): £13
A trio of Whitby Dac fossil ammonites, each displaying one polished face. 470 grams total, 73-94 mm
From Whitby Dac. Ex Lincolnshire, UK, collection.
