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    Basalt £1.38 – £3.28 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    Basalt igneous rock specimens from Northern Ireland, which formed during the Tertiary period approximately 60 million years ago. A dense, fine crystalline, dark coloured rock which forms at extrusive igneous bodies and contains olivine alongside with various pyroxene minerals such as augite along with plagioclase as well. The samples are available in 3 sizes and come supplied in a white card specimen tray with a label. Being so common and an important igneous rock, it is suitable for educational use as they are one of the introductory and staple rocks that students are often shown when entering earth sciences.

    27 in stock

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    Dunite £1.73 – £5.18 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    Dunite igneous rock specimens from the Gusdal olivine pit in Åheim, southern Norway. Composed of green olivine minerals with chromite and pyroxene crystals, the rock forms as intrusive igneous plutons in the earth mantle down to 400 km deep and displays a coarse texture and green colouration. Overall, the samples are fairly granular and weak due to their chemistry and form part of the basal gneiss complex of southern Norway. Ideal for various levels of collectors and for higher level education and research use, the samples are available in three sizes and come supplied in a card tray with an information label.

    25 in stock

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    Essexite (olivine monzogabbro) £1.73 – £3.46 ex VAT
    Specimen Size
    2" x 2"3" x 2"4" x 3"

    Essexite igneous rock specimens from Lanarkshire, Scotland, UK, also known as olivine or nepheline monzogabbro is an intrusive rock with mafic chemistry, composed of nepheline and plagioclase feldspar along with olivine, magnetite minerals as well as augite phenocrysts which exhibit euhedral crystal forms. The rock has a dense weight and overall dark colouration but attractive appearance. It is locally known as Crawfordjohns and was highly sought after as a high quality material to produce curling stones. These samples are excellent for young and older collectors as well as higher educational use, the pieces are available in three sizes and come supplied in a card tray with an information label.

    61 in stock

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

    Gabbro igneous rock specimens from Balmedie quarry, Aberdeen, Scotland which exhibit a coars grained texture from the crystals. Formed as a mafic pluton intrusion, the samples contain pyroxenes such as augite along side plagioclase feldspar, amphibole and olivine crystals. They are derived from a body known as the Belhelvie basic intrusion which the parent unit being the Caledonian Supersuite. Samples exhibit a grey colouration and density and are suitable for the more serious or professional collector or higher educational use to differentiate similar looking igneous rocks with different compositions and origins. Available in three sizes, the specimens come supplied in a card tray with an information label.

    39 in stock

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    Garnet Peridotite £3.45 – £9.20 ex VAT
    Specimen Size
    1.5 " x 1.5"2" x 2"3" x 2"4" x 3"

    Garnet peridotite igneous rock specimens found in the Gusdal Olivine Pit, Åheim, Norway is an ultra mafic rock which contains high pressure and temperature minerals such as olivine and garnet crystals. Exhibiting a green colouraiton with striking red spots, these samples were pushed up to the earths crust during the Caledonian orogeny during the Ordovician and Devonian period over 400 million years ago. The specimens are dense as expected and are ideal for children and serious collectors because of the colourful appearance as well as for higher educational use to describe deep mantle material as well as orogenic processes. The hand samples are available in various sizes and come supplied in a card tray with an information label.

    183 in stock

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

    Trachyte, a common igneous rock composed of various minerals including quartz, feldpsars, micas and olivine, rock specimens come from East Lothian, Scotland and are available in optional sizes, supplied in a card tray with a label.

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