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  • Amygdaloidal Basalt (1kg) £8.00 ex VAT

    Amygdaloidal Basalt is a variety of basalt from the Isle of Skye, specimens are supplied in a polythene bag in lots of 1 kg with a label.

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    45 in stock

  • Basalt (1kg) £8.00 ex VAT

    Igneous Basalt of Tertiary age from Northern Ireland. Specimens are typical black in colour and has a fine grained texture. Specimens are supplied in polythene bags in lots of 1 kg and are come with an information label.

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    74 in stock

  • Biotite Muscovite Granite (1kg) £8.00 ex VAT

    Coarse grained variation of granite, composed of quartz, feldspar, biotite and muscovite. These samples were collected from Liskeard, Cornwall and are ideal for educational use.

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  • Gabbro (1kg) £8.00 ex VAT

    Classic Gabbro specimens, showing typical coarse grained crystalline texture. Gabbro is an intrusive mafic igneous rock chemically similar to basalt.

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    41 in stock

  • Graphic Granite (1kg) £8.00 ex VAT

    Graphic Granite is a leucocratic igneous rock found predominantly in granitic pegmatites. It’s coarse intergrowths of feldspars display a Runic or Cuneiform configuration hence the term “graphic”

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    99 in stock

  • Greisen (1kg) £8.00 ex VAT

    Greisen are a form of granitic rock or pegmatites which have been highly altered, it is formed by autogenic alteration of a granite and is a considered an endoskarn. These samples of Greisen appear mostly yellow in colour and come from Cumbria, UK. Specimens are supplied in a polythene bag in lots of 1 kg with a label.

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  • Larvikite (Syenite) (1kg) £10.00 ex VAT

    Larvikite found in Norway. Specimens are supplied in a polythene bag in lots of 1 kg with a label. Larvikite is defined as a monzonitic plutonic rock and is almost entirely composed of feldspar.

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    Mahogany Obsidian (1kg) £12.00 ex VAT

     

     

    This Mahogany obsidian is sourced in the United States of America. Impurities of magnesium and iron give this variety a red or brown appearance hence the name ‘mahogany obsidian’ or oak obsidian. Specimens are supplied in a polythene bag in lots of 1 kg with a label.

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    Out of stock

  • Microgranite (Cumbria) (1kg) £8.00 ex VAT

    Micro Granite is a variation of the granite group of rocks, composed of the minerals quartz, feldspar and mica. These particular samples were collected from Threlkeld quarry, Cumbria, UK. Specimens are supplied in a polythene bag in lots of 1 kg with a label.

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  • Obsidian (1kg) £12.00 ex VAT

     

     

    Obsidian is a naturally occurring volcanic glass derived from a rapidly cooled high silica lava. Often associated with the margins of Rhyolitic lava flows. It has little or no discernable crystalline structure. Specimens are supplied in a polythene bag in lots of 1 kg with a label.

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  • Sold Out
    Preseli Bluestone – (Dolerite) (1kg) £15.00 ex VAT

    These specimens of ‘Preseli Bluestone’ are a form of Spotted Dolerite. The samples originate from the Preseli Hills of Wales, and were transported by a glacier & deposited as glacial erratics. Specimens are supplied in a polythene bag in lots of 1 kg with a label.

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    Out of stock

  • Pumice – 500 g £9.00 ex VAT

    Pumice specimens from the Lipari islands, Italy. Pumice is an igneous rock with a highly porous structure resulting from trapped gas bubbles as the lava was being ejected. The rock is usually very light & buoyant in water. Specimens are supplied in a polythene bag in lots of 500g with a label.

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  • Rhomb Porphyry (1kg) £8.00 ex VAT

    An igneous rock exhibiting a porphyritic texture containing large cubic crystals of feldspar within a fine grained matrix. Collected near Oslo, Norway. Each sample is supplied in a labelled card tray. Specimens are supplied in a polythene bag in lots of 1 kg with a label.

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  • Rhyolite (1kg) £8.00 ex VAT

    Rhyolite specimens found in Cumbria. Rhyolite is a felsic (silica rich) rock, often formed in highly explosive volcanoes. Specimens are supplied in a polythene bag in lots of 1 kg with a label.

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  • Rhyolite Felsite (1kg) £8.00 ex VAT

    Rhyolite Felsite, a highly felsitic composed variation of Rhyolite, found in Scotland. Specimens are supplied in a polythene bag in lots of 1 kg with a label.

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  • Shap Granite (1kg) £8.00 ex VAT

    Adamellite granite also known as shap granite from Cumbria, famous for its large pink feldspar crystals his granite is well known. The samples come from the Shap Quarry, Shap Fell, Cumbria and are supplied in a polythene bag in lots of 1 kg with a label.

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