Daniel Philco has written:

'An open pit design for the naranjos porphyry copper deposit, Ecuador'

D.J Findlay has written:

'The Lang Lake copper-molybdenum deposit, northestern Ontario: a possible early Precambrian porphyry deposit' -- subject(s): Bochawna Copper Mines, Lang Lake

J. L. Jambor has written:

'Geology and hydrothermal alteration at the Maggie porphyry copper-molybdenum deposit, south-central, British Columbia' -- subject(s): Copper ores, Geology, Hydrothermal alteration, Molybdenum ores

'Sulphide zones and hydrothermal biotite alteration in porphyry copper-molybdenum deposits, Highland Valley, British Columbia' -- subject(s): Biotite, Sulphide minerals

'Geology and hydrothermal alteration at the Maggie porphyry copper-molybendum deposits, South-Central, British Columbia'

Robert C. Steckley has written:

'Blasting tests in a porphyry copper deposit in preparartion for in situ extraction' -- subject(s): Blasting, Core drilling

The largest source of copper is from porphyry ore.