from The Century Dictionary.
- noun A brittle steel-gray or iron-black ore of tin, of a metallic luster, consisting of the sulphids of tin, copper, and iron, and generally zinc, found in Cornwall; tin pyrites. Also called, from its color, bell-metal ore.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Min.) A mineral of a steel-gray or iron-black color; tin pyrites. It is a sulphide of tin, copper, and iron.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun mineralogy The
Sorry, no etymologies found.
Tin also occurs as sulphide combined with sulphides of copper and iron in the mineral stannine or bell-metal ore.