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![Cut and Polished Agate Crystal Geode Half Collection [6]](https://timelineauctions.com/zoom_images/zoomthumb/2/2/227836_900x900.jpg "Cut and Polished Agate Crystal Geode Half Collection [6]")
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LOT 2605
Cut and Polished Agate Crystal Geode Half Collection [6]
2 3/8 - 4 1/4 in. (1.05 kg total, 6.1-10.7 cm).
A selection of cut geode halves, each with an internal crystal-filled cavity. [6, 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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LOT 2605
Cut and Polished Agate Crystal Geode Half Collection [6]
Sold for (Inc. bp): £20
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Historic 'Brazil' Tourmaline Mineral Specimen
Sold for (Inc. bp): £59
Black variety with crystals showing striations, collection number 72. 120 grams, 53 mm
Acquired on the UK mineral and fossil market, since 1970. From the historic mineral collection of Richard Valentine Cain, London, UK, thence by descent. Accompanied by an original historic index file card. -
British Fossil Ammonite Display
Jurassic Period, Toarcian Stage, 184.2-174.7 million years B.P.Sold for (Inc. bp): £20
Comprising three hildoceratids fossils in a display frame. 70 grams total, 12.5 cm including stand
From a Cambridgeshire, UK, collection. -
Fossil Fish in Matrix
Eocene Period, circa 58-36 million years B.P.Sold for (Inc. bp): £33
Comprising two complete Knightia alta specimens and remains of a third fish. 622 grams, 13.1 x 13.7 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.
