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LOT 2459
Fossil Thysanopeltidae Trilobite in Matrix
MIDDLE DEVONIAN PERIOD, CIRCA 380 MILLION YEARS B.P.
4 in. (386 grams, 99 mm).
Thysanopeltidae scutellum on a textured matrix, showing detail of the characteristic fan-like tail shield. [No Reserve]
ProvenanceFrom the private collection of Kenneth Machin (1936-2020), Buckinghamshire, UK; his collection of antiquities and natural history was formed since 1948; thence by descent.
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 2459
Fossil Thysanopeltidae Trilobite in Matrix
Estimate £30 - 40€35 - 46 (for guidance only)$41 - 54 (for guidance only)
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Seymchan Meteorite Cross-Section
Circa 4.5 billion years B.P.Estimate: £6,000 - 8,000 (+bp*)
Opening Bid: £3,000
A magnificent polished cross-section from the Seymchan pallasite meteorite, revealing the honeycomb-like structure characteristic of pallasites, with translucent olivine crystals embedded within iron-nickel crystals; accompanied by a custom-made display stand. 356 grams, 23.2 cm
Discovered in 1967, recovered from the bed of the river Hekandue in the Magadan District, Russia (62° 54’ N, 152° 26’ E).
The main mass of 272.3 kilograms was found during a survey in June 1967 by geologist F. A. Mednikov. The mass was a triangular-shaped thumb-printed meteorite lying among the stones of the brook bed. A second specimen of 51 kilograms was found with a mine detector at a distance of 20 meters from the first in October 1967 by I. H. Markov. During a new expedition in 2004, Dmitri Kachalin recovered about 50 kilograms of new material. Remarkably, about 20% of the new specimens were found to contain olivine crystals, and so revealed the silicate nature of the meteorite. The pallasitic structure was not previously discovered during studies on small metal-only sections of the original mass. The distortion of the Widmanstatten patterns is interpreted as shearing of the superheated meteorite as it broke up in the Earth's atmosphere. -
A Collection of High Quality Crystal Specimens
Estimate: £30 - 40 (+bp*)
Opening Bid: £5
Comprising: two quartz specimens from the famous Minas Gerais in Brazil; two pyrite specimens from Huanaco in Peru; dark purple amethyst from Antigas in Uruguay; and a crystalline malachite specimen. 658 grams total, 36-73 mm
From Brazil, Peru, Uraguay, and The Democratic Republic of Congo. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK. -
![Group of Five [5] Cut and Polished Geode Half Specimens](https://timelineauctions.com/upload/images/items/small/255988-s.jpg)
Group of Five [5] Cut and Polished Geode Half Specimens
Estimate: £20 - 30 (+bp*)
Opening Bid: £5
Comprising five freestanding specimens with polished faces, some with enhanced colouring. 2.35 kg total, 10.7-11.4 cm
From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
