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LOT 1803
Natural History - Unpolished Cut Malachite Section Group
2 3/8 - 4 1/2 in. (1.05 kg total, 6-11.5 cm).
A group of six unpolished cut malachite sections. [6, No Reserve]
ProvenanceD R of Congo.
Mineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's).
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AUCTIONS:
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LOT 1803
Natural History - Unpolished Cut Malachite Section Group
Sold for (Inc. bp): £39
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Natural History - Knightia Fossil Fish
Eocene Period, 56-33 million years B.P.Sold for (Inc. bp): £33
A Knightia alta fossil fish in matrix. 678 grams, 18 cm wide
From Wyoming, Green River Formation, U.S.A. Acquired during the 1980s. From the Pradi Collection, Boston, U.S.A.
Seasonally, some 56 million years ago, in the Green River Region of Wyoming, torrential rains fell on the mountains. The rain flowed down the mountain sides, forming wide shallow lakes in the valley below. During the dry season, these lakes evaporated (similar to certain parts of Africa today). Millions of fish died in this short period of time. This climatic cycle happened over a 20-thousand-year period. Layer upon layer of mud was deposited over these years, entombing huge numbers of fish. At a much later date volcanic activity uplifted this area to expose their fossils. -
Natural History - English Fossil Crab Group
Eocene Period, 56-33 million years B.P.Sold for (Inc. bp): £7
A pair of fossilised Zanthopsis leachi (Desmarest) crabs. 89 grams total, 46 mm wide
From the Isle of Sheppey, Kent, UK. Acquired 1950s-1960s. From an old Bristol, UK, paleontological collection. -
Natural History - Cut and Polished Malawi Agate Geode Pair
Sold for (Inc. bp): £13
An attractive pair of Malawi agate geode cult halves, with polished faces. 1.1 kg total, 11.5 cm each
Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's).
