Eclogite is an uncommon rock, composed of mainly two minerals, reddish-brown garnets and Omphacite (green pyroxene). Other minerals, such as kyanite may also be present. These rocks come from Almenning, Norway. Specimens are supplied in a polythene bag in lots of 1 kg with a label.
Garnet Mica Schist . The specimen is mostly muscovite mica schist with a scattering of small pink or red garnets. Collected from Scotland. Supplied by weight, pieces come as they are in various shapes and sizes up to the weight of 1 kilogram. Packed in a polythene bag with an information label.
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.
Phyllite is a foliated metaorphic rock formed from slate which has been further metamorphosed. These specimens from Cumbria show good, fine cleavage and a silky metallic lustre. Supplied in lots of 1 kg.
Slate is a fine-grained, foliated, homogeneous metamorphic rock derived from a shale-type protolith composed of clay or volcanic ash through low-grade regional metamorphism. Supplied in lots of 1 kilos, with an information label.