Tin does not occur naturally by itself, and must be extracted from a base compound, usually cassiterite, stannite, cylindrite, franckeite, canfieldite, and teallite
One afternoon Alfredo Petrov and I wandered into this remote mining camp and bought about 200 pounds of beautiful cleavable teallite
at prices only somewhat higher than the smelter would pay.
It appears also as pseudomorphs after pyrrhotite and, rarely, after teallite
Contributions to the Knowledge of Bolivian Mineralogy, IV, Teallite
The sulfides and Sulfosalts are very well represented, most notably arsenopyrite, bismuthinite, bournonite, cylindrite, franckeite, pyrargyrite, pyrite, stannite, stibnite, teallite
, and wurtzite Among the oxides, cassiterite and quartz are most important and siderite is the most important carbonate.
General appearance: It has an overall similarity to teallite
reports the identification of lath-like crystals of teallite
to 5 mm in polished sections.