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LOT 2656
Natural History - Historic Gold Ore Specimen
3/4 in. (3.4 grams, 21 mm).
Displaying earthy-yellow, yellowish brown and gold-yellow colours, collection number 251. [No Reserve]
ProvenanceAcquired 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.
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AUCTIONS:
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Natural History - Cut and Polished Amethyst Crystal Geode Pair
Sold for (Inc. bp): £39
Spherical geode cut in half exposing the internal cavity filled with dark purple amethyst crystals. 1.05 kg total, 11.2 cm each
From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's). -
Natural History - Historic 'Arkansas, USA' Wavellite Mineral Specimen
Sold for (Inc. bp): £65
Displaying apple-green and silver-green colours and characteristic fibrous, radiating structure, collection number 240, with an old James Walker invoice dated 1977. 71 grams, 51 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. -
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.
