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umangite
umangite (juːˈmæŋɡaɪt) n (Minerals) a copper selenide mineral, Cu3Se2, having a dark blue or red colour and metallic lustreumangite
umangite[ü′maŋ‚gīt] (mineralogy) Cu3Se2 A dark cherry red mineral consisting of copper selenide; occurs in massive form, in small grains or fine granular aggregates. |