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LOT 1975
Natural History - Large Historic Citrine Crystal Specimen
6 1/4 in. (2.69 kg, 16 cm).
A substantial section of a natural geode with richly coloured citrine crystals to the inner face. [No Reserve]
ProvenanceEssex gallery, early 2000s.
CONDITIONTimeLine Auctions follows a vetting process to ensure the authenticity and legality of all items, reinforcing our commitment to integrity and responsible trading. Each antiquity, antique, and coin lot undergoes thorough examination by a vetting committee of at least ten external specialists, professional trade association members, scientists, and archaeologists: Our Vetting Process
AUCTIONS:
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LOT 1975
Natural History - Large Historic Citrine Crystal Specimen
Sold for (Inc. bp): £33
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Natural History - Fire Opal in Matrix Mineral Specimens
Sold for (Inc. bp): £20
A group of 50 matrices containing fire opal. 1.14 kg total, 36-63 mm
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 - Labradorite Crystal Specimen Group
Sold for (Inc. bp): £1
A group of 20 crystalline labradorite specimens of dark colour, with a waxy lustre; a calcium-enriched feldspar mineral first identified in Labrador, Canada, which can display an iridescent effect. 2.79 kg total, 4.6-10.6 cm
Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's).
