Click on thumbnails for a larger image. Please be patient since some of these pages of thumbnail images take some time to load. These mineral photos are copyrighted by their owners and may not be used without permission.
Gratonite: Pb9As4S15
Comments: Crystal cluster of gratonite. The largest crystal is 2.5 mm across. Location: Excelsior mine, Cerro de Pasco, Pasco dept., Peru. Scale: 1.5 x 1 cm. © John Veevaert