Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun mineralogy A black to dark blue opaque
copper sulfide mineral withchemical formula Cu9S5.
Etymologies
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Examples
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The copper mineralization within the upper 300 metres of the deposit includes both supergene digenite-covellite and hypogene chalcocite-bornite replacing earlier chalcopyrite.
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