- allemontite
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/al'euh mon"tuyt/, n.a white to gray, brittle mineral, antimony arsenide, AsSb, occurring in reniform masses: formerly used as an ore of arsenic.[1830-40; named after Allemont (place in France where found); see -ITE1]
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▪ mineralthe mineral arsenic antimonide (AsSb). It commonly occurs in veins, as at Allemont, Isère, Fr.; Valtellina, Italy; and the Comstock Lode, Nevada. It also is present in a lithium pegmatite at Varuträsk, Swed. Polished sections of most specimens of allemontite show an intergrowth of allemontite with either pure arsenic in a vein occurrence or with nearly pure antimony in a pegmatite occurrence. Homogenous allemontite has also been found at Varuträsk. For detailed physical properties, see native element (table).* * *
Universalium. 2010.