Roger Weller, geology instructor
[email protected] copyright 2011-R.Weller
tetrahedrite-3
tetrahedrite with Siderite
Quiruvilca Mine, Santiago de Chuco Province,
La Libertad Dept., Peru
tetrahedrite
2815
Photo is copyright free only for
non-commercial educational uses.
Just credit photo to R.Weller/Cochise College
from the A.L. Flagg collection