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LOT 2314
Bismuth Crystal Display Formation
1 3/8 in. (21 grams, 36 mm).
Cluster of hopper crystals exhibiting a stairstep crystal structure and iridescent colours. [No Reserve]
ProvenanceFrom a Cambridgeshire, UK, collection.
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 2314
Bismuth Crystal Display Formation
Estimate £20 - 30€23 - 35 (for guidance only)$27 - 41 (for guidance only)
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Large Amethyst and Quartz Crystal Display
Circa 120-140 million years B.P.Estimate: £2,000 - 3,000 (+bp*)
Opening Bid: £11,100
An ovoid geode section with large prismatic quartz and light purple amethyst crystals with colour concentrations at the peak of the terminations; mounted on a custom-made display stand. 14.75 kg, 37.5 x 25 x 17 cm, 52 cm including stand
From Artigas, Uruguay. Property of a London lady. -
Fossil Knightia Fish Plate
Eocene Period, circa 58-36 million years B.P.Estimate: £30 - 40 (+bp*)
Opening Bid: £5
A Knightia alta fish on a rectangular limestone matrix. 929 grams, 17.5 x 12.5 cm
From Wyoming, USA. From the private collection of a Devon, UK, lady.
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 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. -
Fossil Crotalocephaline Trilobite in Matrix
Middle Devonian, circa 380 million years B.P.Estimate: £30 - 40 (+bp*)
Bids: 1 | Current Bid: £5
Crotalocephaline gibbus on a matrix showing characteristic sharp pygidial spines. 219 grams, 93 mm
From the private collection of Kenneth Machin (1936-2020), Buckinghamshire, UK; his collection of antiquities and natural history was formed since 1948; thence by descent.
