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LOT 2769
Manganese Dendrite Landscape Plaque Group
2 1/2 - 4 1/4 in. (235 grams total, 6.4-10.8 cm).
A group of three sawn rectangular shale specimens, each displaying manganese oxide dendrites. [3, No Reserve]
ProvenanceEx Mineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
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AUCTIONS:
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Massive Cave Stalagmite Section
Sold for (Inc. bp): £20
A colossal cut section of cream-coloured stalagmite showing natural ripples. 76 kg, 105 cm
Previously 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 the accumulation of material deposited from ceiling drippings. They are typically formed by the deposition of calcium carbonate and other minerals, which are 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. -
Unpolished Large Fossil Tree Branch Section Group
Middle Jurassic Period, circa 150 million years B.P.Sold for (Inc. bp): £26
Comprising twenty cut sections of petrified wood in various sizes. 1.47 kg total, 5-10.6 cm
From Madagascar. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK. -
![Set of Six [6] Cut, Polished and Felt-Backed Agate Coasters](https://timelineauctions.com/upload/images/items/small/251022-s.jpg)
Set of Six [6] Cut, Polished and Felt-Backed Agate Coasters
Sold for (Inc. bp): £39
Comprising six polished slices in gently graduated sizes, cut from the same geode. 372 grams total, 8.8-10.2 cm
Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
