Geology Superstore

Augite Andesite

£2.25£6.00 ex VAT

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.

We also supply Augite Andesite thin sections for microscope study which are available to buy HERE.

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    Return

    Elessi will accept exchanges and returns of unworn and unwashed garments within 30 days of the date of purchase (14 days during the sales period), on presentation of the original till receipt at any store where the corresponding collection is available within the country of purchase.

    Your return will usually be processed within a week to a week and a half. We’ll send you a Return Notification email to notify you once the return has been completed.
    Please allow 1-3 business days for refunds to be received to the original form of payment once the return has been processed.

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Augite andesite is a variant of the fine grained igneous rock, andesite which contains coarse grained phenocrysts of augite crystals. An extrusive rock of intermediate composition, containing between 50 to 63% of silica, the samples have a dark colour with a blue tint while the augite crystals provide a speckled black appearance. The rock is estimated to have formed during the late Ordovician period and forms part of the Barrowdale volcanic group with other rocks such as dacite and basalt also being present in the area as part of a pre-caldera formation. The rock is slightly denser than our regular line of andesite due to the added pyroxene crystals of augite as phenocrysts. Ideal for established collections and higher level education to exhibit the presence of phenocrysts in igneous material, the rock samples come from Thirlmere, Cumbria, UK and are available in 3 sizes and come supplied in a card tray with a label.

We also supply Augite Andesite thin sections for microscope study which are available to buy HERE.

 

Weight 130 g
Specimen Size

2" x 2", 3" x 2", 4" x 3"

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