A silvery gray mineral consisting of an arsenide and sulfide of iron
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AnswerCrossword Clue
arsenopyriteA silvery-gray mineral consisting of an arsenide and sulfide of iron
tetrahedriteA gray mineral consisting of a sulfide of antimony, iron, and copper, typically occurring as tetrahedral crystals
stannitemineral, iron-black to steel-gray in color, with a metallic luster, copper iron tin sulfide, Cu2FeSnS4: an ore of tin
chalcopyriteA yellow crystalline mineral consisting of a sulfide of copper and iron. It is the principal ore of copper
columbitesA black mineral, typically occurring as dense, tabular crystals, consisting of an oxide of iron, manganese, niobium, and tantalum. It is the chief ore of niobium
columbiteA black mineral, typically occurring as dense, tabular crystals, consisting of an oxide of iron, manganese, niobium, and tantalum. It is the chief ore of niobium