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LOT 2726
Natural History - Historic 'Mexico' Rosasite Mineral Specimen
3 in. (56 grams, 74 mm).
Well-formed crystals on a matrix of brownish black limonite, the crystals coated, in certain areas, by very small, translucent light brown crystals, possibly calcite, collection number 492, with an old Gregor, Bottley & Lloyd label. [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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LOT 2726
Natural History - Historic 'Mexico' Rosasite Mineral Specimen
Sold for (Inc. bp): £13
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Natural History - Polished Fossil Orthoceras Coaster Set
Devonian Period, circa 417-354 million years B.P.Sold for (Inc. bp): £33
Comprising six coasters on a stand carved from fossiliferous stone showing orthoceras specimens. 1.16 kg total, 11.4 cm wide
From a Cambridgeshire, UK, collection. -
![Natural History - Amethyst Crystal Geode Section Group [20]](https://timelineauctions.com/upload/images/items/small/207946-s(1).jpg)
Natural History - Amethyst Crystal Geode Section Group [20]
Sold for (Inc. bp): £20
Comprising variously sized cut sections, each with small dark purple to lavender-coloured amethyst crystals. 1.1 kg total, 26-48 mm
From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's). -
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.
