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LOT 2654
Cut and Polished Fossil Auricaria Pinecone
JURASSIC PERIOD, CIRCA 199-145 MILLION YEARS B.P.
2 1/2 in. (133 grams total, 63 mm each).
Auricaria Mirabilis cone from an extinct coniferous tree. [2, No Reserve]
ProvenanceFrom Argentina, South America, 1998.
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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Amethyst Crystal Mineral Display Specimen
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A group of lavender to very pale purple crystals on a matrix. 27 grams, 40 mm
Property of a North West London, UK, lady. -
Large Cave Stalagmite Section
Sold for (Inc. bp): £7
A colossal cut section of cream-coloured stalagmite showing natural ripples. 76 kg, 105 cm
Previously from a Hong Kong collection. Ex property of a London, UK, gentleman, 1990s.
A stalagmite, is an upward-growing mound of mineral deposits growing on the floor of a cave due to accumulation of material deposited from ceiling drippings. They are typically formed by the deposition of calcium carbonate and other minerals, which is precipitated from mineralised water solutions. Limestone is the chief form of calcium carbonate rock which is dissolved by water that contains carbon dioxide, forming a calcium bicarbonate solution in underground caverns. -
Chalcopyrite Mineral Display Specimen
Sold for (Inc. bp): £33
Brassy yellowish crystals on matrix. 71 grams, 57 mm
Property of a North West London, UK, lady.
