The most commonly occurring form of tin ore; cassiterite, native tin dioxide (peroxide). Also attributive.

Tin-mining. The best quality of tin-ore obtained after dressing; more fully crop-ore, crop-tin.

Mining (English regional (Cornish)). In plural and (less commonly) singular = rough, n.1 9a. Now disused.

tin ore found in pebble-like lumps in alluvial beds.

a miner's name for tin ore.

a variety of cassiterite or tin-stone of brownish colour and fibrous structure, resembling dry wood.

= cassiterite, n.

a variety of cassiterite.

Native stannic dioxide, the most common ore of tin, occurring in various forms, as tin stone, wood tin, toad's-eye tin, stream tin.

stream tin (see stream tin n. at sense 1b).