Cassiterite Collection

Mining for Tin / Cornwall
The tin mine at Camborne, Cornwall. Tin is found in the Cornish mines in the form of veins of cassiterite Date: nineteenth century

Cassiterite
A dark-brown single crystal of cassiterite among quartz. Cassiterite comprises of (tin oxide) and forms ornately faceted crystals with high lustre. Specimen from Turnavore mine, St. Agnes, Cornwall

Cassiterite pseudomorphous after orthoclase
Brown granular cassiterite (tin oxide) have replaced twinned orthoclase crystals. Wheal Coates, St. Agnes, Cornwall

Wood tin, variety of cassiterite
Dark-brown banded aggregates of cassiterite intergrown with white quartz and black tourmaline. Cassiterite comprises of (tin oxide). This polished specimen is from West Kitty mine, St. Agnes, Cornwall

Cassiterite, sparable tin
Dark-brown slender lustrous prisms of cassiterite (tin oxide) on brownish siderite and dark-green chlorite. Specimen from the Dolcoath mine, Camborne, Cornwall

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