black tin
English edit
Noun edit
- (mining, mineralogy) Tin ore (cassiterite), when dressed, stamped and washed, ready for smelting. It is in the form of a black powder, like fine sand.[1]
References edit
- ^ Edward H[enry] Knight (1877) “Black tin”, in Knight’s American Mechanical Dictionary. […], volumes I (A–GAS), New York, N.Y.: Hurd and Houghton […], →OCLC.