The yield of the argentiferous and cupriferous ores, proved, alas!
The lower part of this stratum shows symptoms of the cupriferous schist that lies underneath.
A cupriferous variety, from Jalpa in Tabasco, Mexico, is known as jalpaite.
Copper silicates occur in the mineral kingdom, many minerals owing their colour to the presence of a cupriferous element.
On ore smelting he describes the reduction of iron and lead ores and cupriferous silver or gold ores with lead.