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LOT 2032
Natural History - Cut and Polished Malachite Mineral Specimen Group
1 - 1 3/4 in. (195 grams total, 24-46 mm).
A group of ten cut malachite mineral specimens, each with two polished faces. [10, No Reserve]
ProvenanceFrom D.R.Congo.
Mineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's).
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AUCTIONS:
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LOT 2032
Natural History - Cut and Polished Malachite Mineral Specimen Group
Sold for (Inc. bp): £33
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Natural History - Large Pyrite Crystal 'Paper Weight'
Sold for (Inc. bp): £13
A large pyrite crystal 'paper weight'. 739 grams, 10.7 cm
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. -
Natural History - Orthoceras Fossil Book End Pair
Devonian Period, 417-354 million years B.P.Sold for (Inc. bp): £91
A pair of polished fossil book ends, each trapezoidal and displaying a raised Orthoceras sp. fossil. 2 kg total, 12 cm high each
From Morocco, North Africa. Ex Cambridgeshire, UK, collection.