Tags: Chemical Substance, Mineral.
Stibarsen or allemontite is a natural form of arsenic antimonide (AsSb) or antimony arsenide (SbAs). The name stibarsen is derived from Latin stibium (antimony) and arsenic whereas allemonite refers to the locality Allemont in France where the mineral was discovered. It is found in veins at Allemont Isère France; Valtellina Italy; and the Comstock Lode Nevada; and in a lithium pegmatites at Varuträsk Sweden.