Sedimentary Rocks Archives - Geology Superstore

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Bunter Sandstone
Specimens of bunter sandstone from Knutsford, Cheshire, UK. This bunter sandstone is a desert sandstone from the Buntsandstein (bunter sandstone) strata. Samples are supplied in a white card tray with an information label and are ideal for collectors of British rocks.
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Carrstone £1.38 – £3.46 ex VAT
Specimen Size
2" x 2"3" x 2"4" x 3"
Carrstone is a sedimentary rock which has a distinct, rusty red colour. These particular specimens found in Wesctott, Surrey formed during the Cretaceous period, a friable rock, it is iron rich, obtaining its colour from leaching. Used commonly as a building stone, the samples we have available have various size options and come supplied in a card tray with a label.
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Crinoids Cluster Piece £1.38 – £3.46 ex VAT
Specimen Size
2" x 2"3" x 2"4" x 3"
A small hand sample of fossil limestone containing numerous small Scyphocrinites crinoid stem fragments. Crinoids are fossilised sea lilies, these particular sample come from South Morocco. Often the stems are only preserved in fragments as can be seen. Samples measure approx in 3″ size and come in a small card tray with a label.
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Flint – Devon £1.61 – £2.88 ex VAT
Specimen Size
2" x 2"3" x 2"
Flint is a variety of chert and a hard sedimentary rock of the silicate family with a conchoidal fracture. It exhibits a monochromatic colour scheme with a dark grey or black interior contrasted with a vibrant white exterior. It was collected from South Devon, and comes supplied in a card tray with an information label.
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Greywacke £1.38 – £3.46 ex VAT
Specimen Size
2" x 2"3" x 2"4" x 3"
Greywacke, a hard, grey, poorly sorted sandstone of Silurian age.
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Limestone £1.38 – £3.46 ex VAT
Specimen Size
2" x 2"3" x 2"4" x 3"
Carboniferous ( Dinantian ) Limestone from the White Peak area of Derbyshire.
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Magnesian Limestone £1.38 – £2.62 ex VAT
Specimen Size
2" x 2"3" x 2"
Magnesian Limestone. A dolomite rich rock from the Permian formations of North Yorkshire.
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Marl (Red) £1.38 – £2.62 ex VAT
Specimen Size
2" x 2"3" x 2"
This red coloured Marl is a lime (Calcium Carbonate) rich mudstone from the Triassic of Gloucestershire. They are supplied in labelled card trays.
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Marl (Tea Green) £1.38 – £3.46 ex VAT
Specimen Size
2" x 2"3" x 2"4" x 3"
Tea Green Marl. A greenish grey dolomitic mudsone from the Triassic of Gloucestershire.
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Micaceous Sandstone
Micaceous Sandstone. As the name suggests, this type of sandstone contains flakes of mica which can be seen glinting in the specimens.
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Millstone Grit
Millstone Grit. A coarse grained Carboniferous (Namurian) sandstone from the North of England.
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Mudstone £1.38 – £3.46 ex VAT
Specimen Size
2" x 2"3" x 2"4" x 3"
Carboniferous Mudstone found in Lancashire supplied in a card tray with a label.
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Pisolite £1.38 – £3.46 ex VAT
Specimen Size
2" x 2"3" x 2"4" x 3"
Pea Grit (pisolite) is the name given to a Middle Jurassic limestone which is characterised by its large spherical grains or Pisoids, similar to ooliths. Specimens are supplied with a labelled card tray.
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Pyritised Sediment £1.32 – £1.99 ex VAT
Specimen Size
1.5" x 1.5"2" x 2"
Specimens of pyrite nodules formed from iron sulphide rich sediments, dated to the Jurassic period 195 Mya and collected from Charmouth, UK. These curious specimens are ideal for both mineral collectors and educational use. Samples are supplied in a white card tray with an information label.
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Reef Limestone £1.73 – £2.88 ex VAT
Specimen Size
3" x 2"4" x 3"
Highly fossiliferous reef limestone from the 425 million year old Wenlock Series of the Silurian. Wren’s Nest, Dudley, West Midlands.
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Rock Gypsum £1.38 – £2.88 ex VAT
Specimen Size
2" x 2"3" x 2"
Rock Gypsum, a Triassic evaporite deposit from Nottinghamshire, U.K. Specimens are supplied in labelled card trays.

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