Minerals : orpiment crystals with some red realgar. Realgar is an arsenic sulfide mineral often found in association with a related mineral, orpiment. Please contact us if there is a need for saturday delivery
Realgar & calcite: getchell mine, adam peak,. It was long thought that after long exposure to sunlight realgar changed form to become orpiment, but it is now known that it chang. "if something is not clear, please inquire with us...