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LOT 1866
Natural History - Galena with Quartz and Sphalerite Crystal Specimen
2 3/4 in. (189 grams, 68 mm).
A lead grey galena matrix with clusters of black sphalerite crystals and a large quantity of well-formed clear prismatic quartz crystals; supplied in a carboard specimen tray. [No Reserve]
ProvenanceMineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's).
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AUCTIONS:
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LOT 1866
Natural History - Galena with Quartz and Sphalerite Crystal Specimen
Sold for (Inc. bp): £33
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Natural History - Meteoritic Tektite Group
Sold for (Inc. bp): £165
A group of eight black meteoritic tektites with pocked surfaces. 257 grams total, 37-68 mm
Fine condition.
Ex UK art market, 1970s. Property of a London gentleman.
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. -
Natural History - Blue Calcite Mineral Specimens
Sold for (Inc. bp): £33
A group of 50 blue calcite mineral specimens with waxy lustre. 514 grams total, 25-43 mm
From Mexico. Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's). -
Natural History - Cut and Polished Agate Crystal Geode Section Slice Group
Sold for (Inc. bp): £26
A group of six polished agate slices. 630 grams total, 12-13.2 cm
Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's).