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LOT 3022
Agate Geode Display with Quartz Crystals
11 in. (3.7 kg total, 28 cm including stand).
A rounded geode section with highly polished borders showing white and brown banding, internal cavity lined with botryoidal formation covered with druzy quartz; mounted on a custom-made display stand.
ProvenanceFrom Artigas, Uruguay.
Property of a London lady.
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AUCTIONS:
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LOT 3022
Agate Geode Display with Quartz Crystals
Estimate £450 - 650€520 - 750 (for guidance only)$610 - 880 (for guidance only)
Opening Bid
£243 (EUR 282; USD 328) +BP*
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Polished Fossil Orthoceras Bookends
Upper Devonian Period, circa 385-359 million years B.P.Estimate: £50 - 70 (+bp*)
Opening Bid: £5
Pair of bookends carved from fossiliferous stone with raised Orthoceras specimens. 2.14 kg total, 12 cm high each
Ex Cambridgeshire, UK, collection. -
Three North American Knightia Fossil Fish
Eocene Period, 58-36 million years B.P.Estimate: £40 - 60 (+bp*)
Opening Bid: £5
Comprising three oval matrices with Knightia alta specimens, the largest with two overlapping fish. 148 grams total, 71-85 mm
From Green River formation, Wyoming, 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 Uinta, 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 period. 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. -
Fossil Grasshopper in Matrix Group
Cretaceous Period, 145-66 million years B.P.Estimate: £30 - 40 (+bp*)
Opening Bid: £5
Comprising three matrices, each with a grasshopper specimen. 427 grams total, 89-94 mm
From the Crato Formation, Arripe Basin, Brazil. Acquired on the UK art market. Property of an Essex, UK, gentleman.
