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LOT 2427
Massive Cave Stalagmite Section
35 1/2 in. (66.7 kg, 90 cm).
A colossal cut section of cream-coloured stalagmite showing natural ripples. [No Reserve]
ProvenancePreviously from a Hong Kong collection.
Ex property of a London, UK, gentleman, 1990s.
A stalagmite, is an upward-growing mound of mineral deposits growing on the floor of a cave due to accumulation of material deposited from ceiling drippings. They are typically formed by the deposition of calcium carbonate and other minerals, which is precipitated from mineralised water solutions. Limestone is the chief form of calcium carbonate rock which is dissolved by water that contains carbon dioxide, forming a calcium bicarbonate solution in underground caverns.
CONDITIONTimeLine Auctions follows a vetting process to ensure the authenticity and legality of all items, reinforcing our commitment to integrity and responsible trading. Each antiquity, antique, and coin lot undergoes thorough examination by a vetting committee of at least ten external specialists, professional trade association members, scientists, and archaeologists: Our Vetting Process
AUCTIONS:
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Mixed Crystal and Mineral Specimen Group
Sold for (Inc. bp): £33
Comprising: pale pink heulandite from Nasik, India; galena from Sweet Water Mine, Missouri, USA; azurite and malachite from shaft no. 3, TCL Mine, Tsumeb, Namibia; aragonite 'sputnik' from Spain; galena and sphalerite from Callow Hill Quarry, Fontesbury, Shropshire; sphalerite with pyrite from Huaron Mining District, Cerro de Pasco, Peru; cluster of apophyllite crystals from Poona, India; stilbite from Poona, India; wolframite from Carrock Mine, Mungrisdale, Caldbeck Fells, Cumbria; malachite displaying some silky lustre from the Democratic Republic of Congo. 893 grams total, 32-66 mm
From the private collection of a Cornish, UK, gentleman. -
Polished Fossil Coral Head Heart
Devonian Period, circa 417-354 million years B.P.Sold for (Inc. bp): £20
Cut to a heart shape and polished to reveal the internal structure. 166 grams, 72 mm
From a Cambridgeshire, UK, collection. -
Large Fossil Perisphinctes Ammonite
Jurassic Period, circa 174-145 million years B.P.Sold for (Inc. bp): £130
Perisphinctids indogermanus fossil ammonite showing clear ribbing. 867 grams, 14 cm
From Madagascar. From a Lincolnshire, UK, collection.