allemontite
noun
al·le·mont·ite
ˌaləˈmänˌtīt
plural -s
: a mineral consisting of an arsenic antimony compound SbAs occurring in metallic-looking reniform masses
Word History
Etymology
French, from Allemont, Allemond, Isère department, France, its locality + French -ite
First Known Use
1850, in the meaning defined above