The powder diffraction pattern was consistent with the digenite
phase of copper sulfide that has a stoichiometry of [Cu.
The uranium minerals are accompanied by chalcopyrite, digenite
and malachite, all copper minerals and some gold.
High grade copper-bearing replacement of primary chalcopyrite by the secondary minerals bornite and digenite
is present only at the base of the oxidation zone.
Mineralization in the enrichment blanket is dominated by black sooty chalcocite, with lesser digenite
More than 90 percent of the copper mineralization, all of which occurs below the gold cap, is chalcocite, digenite
and minor chalcopyrite and cuprite.