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LOT 2672
Natural History - Large Fossil Crinoid Plate
SILURIAN PERIOD, CIRCA 443-416 MILLION YEARS B.P.
16 1/8 in. (4.3 kg, 41 cm).
Presenting a Scyphocrinus elegans specimen with good details on a tongue-shaped matrix.
ProvenanceFrom a Lincolnshire, UK, collection.
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AUCTIONS:
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Natural History - Diogenite NWA 5480 Meteorite Slice
Found 2008 A.D.Sold for (Inc. bp): £52
A cut slice of scarce achondrite from the diogenite group recorded as: Northwest Africa 5480; displayed in a Swiss membrane box. 11.7 grams, 48 mm (58 grams total, 99 x 75 including case)
From the Sahara, N.W. Africa. Ex Hupe collection, U.S.A. From a Leicestershire, UK, collection.
The total known mass of the meteorite found in Mali was 4.91 kg. Mineralogically, the diogenites are primarily composed of magnesium-rich orthopyroxene, with minor amounts of plagioclase and olivine. The pyroxenes are usually coarse-grained, suggesting a cumulate origin for the diogenites in magma chambers within the deeper regions of Vesta's crust. The achondrites of this group are named after a 5th century B.C. Greek philosopher Diogenes of Apollonia, who was the first to suggest that meteorites originate from outer space. -
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Natural History - Group of Polished Copal with Insects
Carboniferous Period, circa 3 million years B.P.Sold for (Inc. bp): £39
Comprising four pieces, each with a number of insect inclusions. 12 grams total, 28-61 mm
From a Lincolnshire, UK, collection. -
Natural History - Historic 'Australia' Boulder Opal Mineral Specimen
Sold for (Inc. bp): £59
The matrix showing pale sky-blue opal, collection number 425, with an old James Walker label. 34.8 grams, 39 mm
Acquired on the UK mineral and fossil market, since 1970. From the historic mineral collection of Richard Valentine Cain, London, UK, thence by descent. Accompanied by an original historic index file card.
