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LOT 2261
Natural History - Boxed Mixed Mineral Collection [12]
3/4 - 1 in. (142 grams total, 21-24 mm).
Comprising muscovite, realgar, orpiment, rubellite, tourmaline, bornite, sulphur, kyanite, ulexite and chrysocolla; each in a labelled box. [12, No Reserve]
ProvenanceEx Mineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's).
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AUCTIONS:
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Natural History - Red Quartz Nodule
Sold for (Inc. bp): £26
The rounded pebble opened to reveal the internal cavity filled with quartz crystals in enhanced red colour. 122 grams, 56 mm each
From a Cambridgeshire, UK, collection. -
Natural History - Knightia Fossil Fish Plate
Eocene Period, circa 56-33 million years B.P.Sold for (Inc. bp): £85
The square sandstone matrix with two Knightia alta fossil fish specimens. 507 grams, 16 x 13 cm
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. -
Natural History - Purple Cut and Polished Agate Crystal Geode Half Group [10]
Sold for (Inc. bp): £20
In enhanced dark purple colour. 1.6 kg total, 58-76 mm
Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's).