921 results found
Cassiterite - grey aggregated crystals - a sample of tin ore containing 73% metallic tin - from the Rooiberg Tin Mine, Waterberg District, Transvaal, South Africa -
Leadhillite - pale green platy crystals on barite - from Leadhills, Lanarkshire.
Leadhillite - pale grey-green platy crystals associated with bright blue caledonite and a small amount of yellow pyromorphite - from Leadhills, Lanarkshire
Lanarkite - dull pale grey acicular aggregates with grey hexagonal tabular crystals of leadhillite and a small amount of yellow pyromorphite - from Susanna Mine, Leadhills, Lanarkshire.
Caledonite - bright blue, granular - with deeper blue linarite and bright green, mammilated pyromorphite - from Leadhills, Lanarkshire.
Vanadinite - small brown barrel-shaped crystals on dull white botryoidal apatite - from Wanlockhead, Dumfriesshire.
Mattheddleite - microscopic white crystals - associated with grey acicular aggregates of lanarkite, grey platy leadhillite and earthy yellow-green pyromorphite - probably from Susanna Mine, Leadhills, Lanarkshire.
Larvikitic syenite, polished coarse-grained blue-grey slab almost completely composed of labradorite, trade name 'Larvikite Granite', from Norway
Granite, polished coarse-grained slab, reddish-brown orthoclase with translucent quartz and black biotite, trade name 'African Red', probably from Africa
Eclogite, medium grained composed of granular green pyroxene with red garnet, from Norway
Ferroaxinite - single large dark brown translucent crystal - previously undifferentiated - on matrix with an unidentified asbestiform mineral - from Puiva, Khanty-Mansi Okrug, Tyumen Oblast, Russia.
Calcite - a group of colourless crystals, the tips of some are grey with inclusions and several tiny pyrite crystals scattered over - from New Glencrieff Mine, Wanlockhead, Dumfriesshire
Calcite - two white to pale grey double terminated crystals - one 4cm, the other 2.5cm - on dolomite crystals on quartz matrix - from New Glencrieff Mine, Wanlockhead, Dumfriesshire
Barite - a group of radiating crystals frosted over by tiny calcite crystals with larger prismatic calcite crystals at the edges of the specimen - from New Glencrieff Mine, Wanlockhead, Dumfriesshire
Lanarkite - a group of very fine lustrous, pale greenish-grey crystals on a quartz matrix - from Susanna Mine, Leadhills, Lanarkshire
Macphersonite - coating a radiating group of grey lanarkite crystals - old handwritten label states; from Leadhills, Lanarkshire.