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LOT 1763
Natural History - Fuchsite Mica Specimen Group
1 3/4 - 3 1/2 in. (2.53 kg total, 43-88 mm).
A group of 50 medium sized fuchsite mica specimens. [50, No Reserve]
ProvenanceMineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's).
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AUCTIONS:
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Natural History - Fossil Bivalve Group
Jurassic Period, circa 150 million years B.P.Sold for (Inc. bp): £26
A pair of fossilised bivalves. 434 grams total, 71-83 mm
From the Morondava River Basin, Atsimo-Andrefana region, Southwest Madagascar. From an old Oxfordshire, UK, fossil and mineral collection. -
Natural History - Pyrite Crystal Group
Sold for (Inc. bp): £20
A group of 100 pyrites or 'fool's gold' crystal specimens. 568 grams total, 12-26 mm
From Brazil. Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's). -
Natural History - Rastellum Fossil Bivalve
Jurassic Period, circa 155 million years B.P.Sold for (Inc. bp): £33
A Rastellum carinatum fossil bivalve; held in a card collector's tray. 105 grams, 61 mm
From Madagascar. Ex Cambridgeshire, UK, collection.
Rastellum carinatum specimens have wide, angled ribs that have led to it being called the 'denture clam'; the zig-zag join between the two shells stopped coarse dirt and debris entering the shell and damaging its soft body. Like modern oysters, it lived in shallow coastal waters including the interstitial zone and fed on food particles that it filtered out of the sea water.
