| Answer | Crossword Clue |
|---|---|
| cassiterite | native tin dioxide, the major ore of tin, aka tinstone |
| cassiterites | CASSITERITE, native tin dioxide, the major ore of tin, aka tinstone |
| tinstone | brown or black mineral, tin dioxide, SnO2, that crystallizes in the tetragonal system; tinstone: the principal ore of tin |
| cassiterites | A reddish, brownish, or yellowish mineral consisting of tin dioxide. It is the main ore of tin |
| cassiterite | A reddish, brownish, or yellowish mineral consisting of tin dioxide. It is the main ore of tin |
