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Definition of Armangite
1. Noun. (minerology) A trigonal-rhombohedral black mineral containing arsenic, carbon, hydrogen, manganese, and oxygen. ¹
¹ Source: wiktionary.com
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1. Noun. (minerology) A trigonal-rhombohedral black mineral containing arsenic, carbon, hydrogen, manganese, and oxygen. ¹
¹ Source: wiktionary.com