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LOT 2280
Natural History - Fossil Seed Fern Group
MIDDLE PENNSYLVANIAN PERIOD, CIRCA 300 MILLION YEARS B.P.
2 5/8 - 3 3/8 in. (240 grams total, 67-87 mm).
Comprising two Pecopteris sp. fossil seed fern pairs. [4, No Reserve]
ProvenanceFrom the Mazon Creek Fossil Beds, Braidwood, Illinois, USA.
Collected 1930-1960.
From the collection of the palaeontologist R Gledhill.
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AUCTIONS:
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Natural History - Large Amethyst Crystal Chunk Group [12]
Sold for (Inc. bp): £13
Comprising twelve dark purple pieces of prismatic crystals. 1.36 kg total, 43-64 mm
From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's). -
Natural History - Black Obsidian 'Volcanic Glass' Specimen Group [100]
Sold for (Inc. bp): £39
Comprising a large quantity of cut specimens of various sizes and shapes. 1.1 kg total, 26-61 mm
Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's). -
Natural History - Large Meteoritic Tektite Group [12]
Sold for (Inc. bp): £39
Meteoric glass, melted terrestrial rock splashed from an impact crater, most roughly ovoid in shape. 969 grams total, 47-83 mm
From Mexico. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's).
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.