 | This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. (September 2020) |
Black tin is the raw ore of tin, usually cassiterite, as sold by a tin mine to a smelting company. After mining, the ore must be concentrated by several processes to reduce the amount of gangue it contains before it can be sold. It contrasts with white tin, which is the refined, metallic tin produced after smelting.
The term "black tin" was historically associated with tin mining in Devon and Cornwall.