from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A lustrous indigo-blue mineral, CuS, an important ore of copper.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A shiny indigo-blue sulfide mineral, CuS, that is an ore of copper.
from The Century Dictionary and Cyclopedia
- n. Same as covellin.
As a substantial, higher grade chalcocite-covellite zone near surface appears to be amenable to heap leaching, the 2010 drilling program will provide information to complete an independent, NI 43-101 compliant, Preliminary Economic Assessment ( "PEA") on a Solvent Extraction-Electrowinning ( "SX/EW") copper heap leaching operation within the next ten months, with a Preliminary Feasibility Study to follow, if warranted.
The copper mineralization within the upper 300 metres of the deposit includes both supergene digenite-covellite and hypogene chalcocite-bornite replacing earlier chalcopyrite.
The deposit hosts a large zone of near-surface, higher-grade chalcocite-covellite copper mineralization that we believe will be amenable to SX/EW, heap leach copper production.
Mixed copper mineralization may contain both chalcocite-covellite and chalcopyrite-bornite mineralization.
ALD-132 Mixed Cu mineralization 0.1 including Chalcocite-covellite zone 0.2
In this fifth and final set of results from 19 of 76 holes drilled this year, long intervals of copper mineralization were intersected in the chalcocite-covellite dominant zone
Of particular note were intersections from the potentially leachable chalcocite-covellite dominant mineralization in hole ALD-136 of 0.568% Cu over 178 metres including 78 metres of 0.692% Cu and in hole ALD-138 of 0.791% Cu over 60 metres.
ALD-103 Mixed Cu mineralization 0.1 including Chalcocite-covellite zone 0.2
The two major goals of the 2010 drilling programme at Altar are to further define the higher-grade, chalcocite-covellite zone which appears to be amendable to heap leaching, and to expand the global copper resource.
ALD-139 Mixed Cu mineralization 0.2 including Chalcocite-covellite zone 0.4
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