Bogdanov, "The Udokan cupriferous
sandstones deposit (eastern Siberia)," Geology of Ore Deposits, vol.
Domingo mine: A study of heavy metals contamination in the water column and sediments of the Chanca River Basin by discharge from an ancient cupriferous
pyrite mine (Portugal).
These dipping cupriferous
sandstone beds were traced along their outcrops by means of shallow prospection pits towards the tops of the mineral veins (Figure 4).
The upper most 20 feet of the sedimentary sequence is cupriferous
and was the main object of the exploration program."
There is a strong association between chalcopyrite and pyrrhotite, whereas the massive pyrite intervals are barren or only weakly cupriferous
. The orebodies are zoned with almost pure sulfides in the upper parts and highly siliceous, lower grade pyritic material in the lower parts (Nelson 1948).
Lot 1792 "Mammillated cupriferous
Zinc, fine and rare, Nertschinsk" turned out to be aurichalcite on gossan, but there is still no sign of the intriguing Lot 2384 "An Aquamarine, one half rose red the other green, Ceylon, considered one of the rarest mineral substances." It is probably a cut stone and an investigation of the Chatsworth jewels may be revealing.
RT is a resource of 2,510 Mt of cupriferous
mineralisation with an average grade of 0.59%, of which 970 Mt is oxide and considered leachable.
Peter (1992) suggested that cupriferous
deposits in the Carboniferous strata may be genetically related to faults in the southeastern section of the Moncton Sub-basin (located in the northeastern corner of the study area).
The term "cupriferous
" can be added to the cryptocrystalline varieties.
Another First Quantum property, the 291 [km.sup.2] Chongwe project, comprises a number of cupriferous
lenses within a 3 km wide shear zone.