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LOT 2640
Framed Cut and Polished Stromatolite 'Beetroot Stone' Specimen
JURASSIC PERIOD, BATHOIAN, CIRCA 150 MILLION YEARS B.P.
13 x 9 1/2 in. (936 grams total, 33 x 24.2 cm including frame).
Displaying attractive pink and cream layering; set in a box frame with information label. [No Reserve]
ProvenanceFrom Chedworth, Gloucestershire, UK.
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.
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AUCTIONS:
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LOT 2640
Framed Cut and Polished Stromatolite 'Beetroot Stone' Specimen
Sold for (Inc. bp): £13
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Amber Topaz Crystal Specimen Group [20]
Sold for (Inc. bp): £78
Comprising twenty amber-coloured pebbles. 223 grams total, 17-37 mm
Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK. -
Meteoritic Tektite Specimen
Sold for (Inc. bp): £59
A tongue-shaped specimen with dimpled surface. 8.44 grams, 44 mm
From Indo-China. Acquired from Friars Square market, Aylesbury, UK, October 2012. 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.
Tektites are lumps of black or dark grey natural glass produced from melted crustal rocks that are caused by large hypervelocity meteorite impacts on sediments. -
Coloured Quartz Crystal Nodule
Sold for (Inc. bp): £72
An opened irregular nodule, the internal cavity filled with dyed green quartz crystals. 866 grams total, 11.1-12.2 cm
From a Cambridgeshire, UK, collection.