A mass of red Realgar crystals on black Sphalerite crystals with minor orange Orpiment and some Pyrite crystals. —
John Sobolewski (JSS),
CC BY 3.0
Note
An arsenic sulfide mineral. Known for its striking red to orange-red color and is characterized by its monoclinic crystal structure.Often found in association with other arsenic minerals in hydrothermal veins and hot spring deposits.
