from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A selenide mineral, with chemical formula Cu3Se2, blue to red in color.
from The Century Dictionary and Cyclopedia
- n. A copper selenide, Cu3Se2, occurring in fine granular to compact masses of a dark cherry-red color: found in the Sierra de Umango, Argentina.
Named after Sierra de Umango, Argentina. (Wiktionary)
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