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LOT 2912
Large Cut and polished Petrified Fossil Tree Trunk Specimen
LATE TRIASSIC PERIOD, CIRCA 225 MILLION YEARS B.P.
6 1/2 in. (1.9 kg, 17 cm).
Cut along the grain, with good exposure of the individual grain modules, probably from Madagascar. [No Reserve]
ProvenanceFrom the property of a Scottish geologist.
Previously with a Surrey, UK, geologist.
Ex Dr Ron Bonewitz collection.
Property of a Cheshire, UK, gentleman.
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AUCTIONS:
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LOT 2912
Large Cut and polished Petrified Fossil Tree Trunk Specimen
Sold for (Inc. bp): £26
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Beetle in Polished Copal
Circa 3 million years B.P.Sold for (Inc. bp): £20
A section of copal containing a beetle and some other inclusions; repaired. 1.61 grams, 27 mm
From Madagascar. 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. -
Spherical Sedimentary Concretion
Sold for (Inc. bp): £20
Naturally formed from hardened sediment with projecting porous, black stone nodules. 647 grams, 10.2 cm
Acquired on the UK art market in the 1990s. From the Dr Ince collection, N.W. London, UK.
A concretion is a compact mass of mineral matter, usually spherical or disc-shaped, and they vary greatly in size. They usually form early in the burial history of sediment, before the rest of the sediment has hardened into solid rock. Concretions occur when a considerable amount of cementing material collects locally around a nucleus, often organic (a leaf, tooth, a section of fossil or shell or dead matter) and commonly a marine invertebrate. -
NWA 8038 Carbonaceous Chondrite (CO3.5) Polished Meteorite
Sold for (Inc. bp): £130
Cut with a triangular cross-section, composed of small chondrules and fine-grained CAI in a dark brown matrix. 27.3 grams, 38 mm
Acquired Morocco, North Africa, 2006. Ex The Meteorite Market, Port Townsend, W. A., USA. Ex USA market. From the private collection of a Leicestershire, UK, gentleman. Accompanied by a 'The Meteorite Market' dealer card and a Swiss membrane box.
