Roger Weller, geology instructor
firstname.lastname@example.org copyright 2010-R.Weller
orpiment with realgar-1
Realgar is arsenic sulfide. It is commonly found with orpiment, also an arsenic
sulfide. Realgar's color ranges from red to orange, while orpiment is a
Photo is copyright free only for non-commercial educational uses.
Just credit photo to R.Weller/Cochise College.
Specimen donated in memory of Ray Dunn