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Glaucophane Schist is also known as Blueschist. The blue-green colour comes from the dominant presence of the minerals Glaucophane (amphibole) & Lawsonite (related to epidote). These specimens were collected from the Isle of Anglesey, North Wales.
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Glaucophane schist also known as Blueschist is a metavolcanic rock that forms by the metamorphism of basalt and rocks with similar composition at high pressures and low temperatures, approximately corresponding to a depth of 15 to 30 kilometers and 200 to ~500 degrees Celsius. The blue color of the rock comes from the presence of the predominant minerals glaucophane and lawsonite. Usually fine grained due to the rapidity & low temperatures of the mechanism involved. However, porphyritic varieties can be found. This example is from the Isle of Anglesey, N. Wales. Specimens are supplied in labelled card trays.
Weight | 130 g |
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Specimen Size | 2" x 2", 3" x 2", 4" x 3" |
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Glaucophane Schist thin section microscope slide exhibiting a clear fabric and a wonderful blue hue under plane polarised light. This material was collected from the Isle of Anglesey, North Wales. Each section is made to 30 microns thickness and the glass is 46 x 27 mm, ideal for microscopy and educational purposes.
Out of stock
Dalradian mica schist is a famous metamorphic rock, composed mostly of the minerals muscovite mica with occurrences of quartz and feldspar, these rock specimens are Pre-Cambrian in age and come from Scotland, supplied in a card tray with an information label.
Out of stock
Samples of graphitic schist from the Pre-Cambrian Dalradian formation, making them among the oldest rocks in the country. The samples come from the Ben Eagach schist formation at Foss mine, Scotland, UK and were collected by our own members of staff. The rock contains mica and graphite, which gives the specimens their unique mica appearance and greasy graphitic texture and lustre.
76 in stock
Garnet mica schist from Loch Tay, Scotland, showing in excellent detail the effects of regional metamorphism along plate boundaries, the garnets push the mica crystals around it due to being stronger, the specimens are available in various sizes or as a cut and lacquered piece, supplied in a card tray with a data label.
62 in stock
Glaucophane Schist is also known as Blueschist. The blue-green colour comes from the dominant presence of the minerals Glaucophane (amphibole) & Lawsonite. These samples are supplied in lots of 1 kilogram and come with an information label.
15 in stock
Greisen metamorphic rock specimens from Caldbeck Fells, Cumbria, composed mainly of quartz and mica with an off yellow colouration. The rock is known as an endoskarn and forms when hydrothermal fluid and heat alter a granitic body, resulting a heavily altered rock which may contain trace amounts of rare elements. These samples are suitable for advanced collectors and higher level education and are available in three sizes, each pieces will come supplied in a card tray with a label.
37 in stock
Specimens of serpentine found in Modum, Southern Norway. Specimens are supplied in a card tray with a information label.
Out of stock
Greenschist metamorphic rock specimens from Scotland, exhibiting excellent schistose texture and folliation and a deep green colouration due to the presence of chlorite and serpentine. Specimens are available in various sizes and supplied in a card tray with a data label.
78 in stock
Migmatites are an unusual rock that is a mixture of both igneous & metamorphic lithologies.The samples were collected by our staff and come from central Norway. Each specimen comes in a card tray with a label.
72 in stock
Banded hornfels exhibiting an alternating band feature, likely due to the original rock being layered such as sandstone, shale etc. The specimens come from Kentellen, Scotland, are available in different sizes and come in a card tray, suitable for school use.
Out of stock
Metaquartzite collected from Onich near Ballachulish, Scotland, which detail text book quality metaquartzite, pure white, hard and composed mainly of quartz with very few impurities, these rock specimens are ideal for educational use or as part of a larger collection of rocks, supplied in a card tray with a label.
Eclogite is a rare metamorphic rock, these specimens come from Scotland and exhibit the two major minerals expected, red garnets and green omphacite. However, both minerals appear to be much darker in colour when compared to Norwegian material. Our stock of this is fairly low now, and only smaller size pieces are available, they will come supplied in a card tray with a data label.
Out of stock
Mylonite exhibiting ribbon texture from Lom, central Norway, excellent rock specimens and rare to come by, available in various sizes.
65 in stock
Garnet Amphibolite supplied in a card tray with a label. This attractive rock from southern Norway has highly prominent garnet porphyroblasts (also known as cherry cake).
26 in stock
Serpentine is a green coloured schist rock, most famous from its type locality along the Lizard peninsula, Cornwall. These specimens come from the Isle of Anglesey, have a much more vibrant colour and are available in various sizes.
Out of stock
Phyllite is a foliated metamorphic rock formed from slate which has been further metamorphosed. These specimens from Kinlochleven in Scotland and show good, fine cleavage and a silky metallic lustre.
200 in stock
Rhodolite garnets in quartz and mica schist matrix from Southern Norway exhibiting bright vibrant pink coloured garnets in a white quartz and metallic grey mica schist with a start contrast of colours, these minerals specimens are available in 3 sizes and come supplied in a card tray with a label.
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