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Geology Superstore
Geology Superstore

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    Accretionary Lapilli Tuff

    Accretionary lapilli tuff is an igneous pyroclastic rock, these samples come from Longsleddle, Cumbria in the UK and forms when hot ash and debris is ejected from as volcano. Some of this material is held together by moisture and once heavy enough, falls into the ash below forming small ‘spots’ within the material, creating a speckled rock. The samples are suitable both for young and serious collectors as well as educational use and are supplied in various sizes with a card tray and label.

    69 in stock

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    Andesite

    Andesite igneous rock specimens of late Ordovician age which form part of the Barrowdale volcanic group. The rocks come from Cumbria, UK and have a dark colouration with a blue tint and may contain augite crystals. The rocks are intermediate in chemistry and suitable for higher level education to explain the difference in various igneous groups. Samples are available in 3 sizes and will come supplied in a card tray with an information label.

    53 in stock

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    Augite Andesite £1.38 – £3.46 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    Augite andesite igneous rock specimens from Thirlmere, Cumbria, UK which are of late Ordovician age which form part of the Barrowdale volcanic group. The samples are of intermediate composition and contain phenocrysts of the pyroxene mineral, augite, giving the normally dark blue rock a black speckled appearance. The samples are available in 3 sizes and come supplied in a card tray with a label.

    100 in stock

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    Augite Granophyre

    Augite granophyre igneous rock specimens from Carrockfell, Keswick in Cumbria, UK. Excellent pieces exhibiting a medium grain size of crystals which constitute this rock including, augite, quartz and feldspars and shows a granophyric texture. Suitable for avid collectors and higher educational use, the samples come supplied in a sized card tray with an information label.

    89 in stock

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    Banded Tuff £2.62 ex VAT
    Specimen Size
    3" x 2"

    Banded tuff rock specimens from Cumbria, UK. An extrusive igneous rock with a felsic chemistry and rhyolitic texture, the specimen exhibit a pink colouration due to the presence of feldspar as well as banded formations. Available in various sizes and supplied in a card tray with a label.

    Out of stock

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    Baryte Tabular Crystal Beds (Cumbria) £2.07 – £10.93 ex VAT
    Specimen Size
    1.5" x 1.5"2" x 2"3" x 2"3" x 3"4" x 3"5" x 3.5"

    Specimens of white tabular baryte crystal beds from Cumbria, UK. Ideal for collectors of British mineral specimens. Samples are supplied a white car tray with an information label.

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    Diorite £1.38 – £3.46 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    Diorite rock specimens from Cockermouth, Cumbria, is an intrusive igneous rock from the Ordovician period with a coarse, phaneratic texture composed of plagioclase feldspar, biotite mica as well as hornblende with intermediate chemistry. Found with the Skiddaw group, the rock samples are more suited for serious collectors and higher level education to describe the chemistry and mineralogy of various igneous groups. Available in 3 sizes and supplied in a card tray with an information label.

    55 in stock

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    Gabbro With Magnetite And Ilmenite – Cumbria £1.38 – £3.46 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    Specimens of gabbro from Carrock Fell, Cumbria, UK which contain trace amounts of magnetite and ilmenite. Specimens are supplied in labelled card trays.

    74 in stock

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    Ignimbrite Welded Tuff £1.38 – £3.46 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    Ignimbirte welded tuff is a pyroclastic rock of any origin formed through volcanic processes, the rock appears to show streaks of welded material on some surfaces and appears to be rhyolitic on the inside. Specimens come from Cumbria and are available in various sizes.

    81 in stock

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