Arsenolite, As2O3, is an oxidation product formed at the surface of sulfide deposits that contain tennantite and arsenopyrite, both arsenic minerals. Its color can be white, yellowish, or reddish.
Location
USA ▹ Montana. Near Smelter.
Photographer
Nessa Eull. 2001-11-26.
Collection
University of North Dakota Mineralogy Collection #1055.
Key words
Arsenolite, Montana
Tech details
520 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens.