Cassiterite - grey aggregated crystals - a sample of tin ore containing 73% metallic tin - from the Rooiberg Tin Mine, Waterberg District, Transvaal, South Africa -

Cassiterite - grey-brown massive - disseminated in magnetite, from south of Old Deibidale Lodge, Carn Chuinneag, Ardgay, Ross and Cromarty

Cassiterite - dark grey-black massive - disseminated in magnetite - in a slag-like metallic ore - from S of Old Deibidale Lodge, Carn Chuinneag, Ardgay, Ross and Cromarty.

Cassiterite - dark grey-black massive - disseminated in magnetite - in slag-like metallic ore - from S of Old Deibidale Lodge, Carn Chuinneag, Ardgay, Ross and Cromarty.

Cassiterite - yellowish-brown crystalline disseminated in magnetite - originally three sectioned pieces of metallic vein under G.1971.16.9, now split in to four - from Carn Chuinneag, Ardgay, Ross and Cromarty.

Cassiterite - dark grey-black massive - disseminated in magnetite - found in a tinstone band - from Carn Chuinneag, Glen Deibidale, Ardgay, Ross and Cromarty.

Cassiterite - disseminated in magnetite - found in a tinstone band - from Carn Chuinneag, Glen Deibidale, Ardgay, Ross and Cromarty.

Cassiterite - dark grey-black massive - disseminated in magnetite - found in a tinstone band - from Carn Chuinneag, Glen Deibidale, Ardgay, Ross and Cromarty.

Cassiterite - large shiny brown twinned partial crystal - associated with minor (included) mica - from the Chukotka Peninsula, Siberia, Russia

Cassiterite variety wood tin, eight prismatic crystals and fragments, resembling wood in cross section, brown in colour, from Cornwall, England

Cassiterite - dark grey-black - associated with magnetite in hornblende-biotite schist - from south of Old Deibidale Lodge, Carn Chuinneag, Glen Calvie, Ross and Cromarty.

Cassiterite - dark grey-black prismatic crystals - associated with magnetite - from south of Old Deibidale Lodge, Carn Chuinneag, Ardgay, Ross and Cromarty.

Cassiterite - small dark brown translucent prismatic crystals on matrix - from St. Agnes, Cornwall, England.

Cassiterite - dark brown translucent prismatic crystals on matrix - from a mine near Trevaunance, St. Agnes, Cornwall, England

Cassiterite - very fine grained - buff coloured - massive - from the Cento Carmelle Tin Mine, Campiglia, Marittima, Pisa, Italy

Cassiterite - tiny brown prismatic crystals in massive material - associated with quartz - from Cente Carmelle Tin Mine, Campiglia Marittima, Pisa, Italy