of copper deposit, the socalled porphyrytype, that is estimated to contain nearly 50% of the worlds' preserved of this strategic metal (Gustafson, 1978; Guilbert and Park, 1986). Estimated preserved of the Haib deposit are about one billion tonnes of very low grade copper ore (~ % Cu), with traces of Mo and Au (Minnitt, 1986).
View Notes PORPHYRY COPPER DEPOSITS from GEOLOGY SGL 402 at University of Nairobi School of Physical Sciences. PORPHYRY COPPER DEPOSITS Porphyry Cus of Mos and Sn .
Exploration History of the Resolution Copper Deposit, Pinal County, Arizona ... Magma Copper confined its exploration efforts over the next decade to the search for additional vein and replacement deposits because no known porphyry copper deposits in this region would be economic at the depths indicated at Superior. ... 3 Comments on ...
deposits, with emphasis on minerals that occur in the supergene oxide zones of porphyry copper and skarn ore deposits."Copper oxides" are defined as those copper minerals containing oxidized
Porphyry copper deposits result from the complex interactions and feedbacks of many processes. Owing to the complexity, a succinct definition that includes the essential attributes of this deposit class is elusive. Consequently, this descriptive model uses a working definition of a porphyry copper deposit. A porphyry copper deposit is 1.
Two mining companies had some interest in the area during the late 1990s but relinquished the ground despite revealing enriched copper in one hole and substantial amounts of leached capping in all other holes, an indicator for porphyry copper deposits.
Eleven gold‐rich porphyry copper and 14 epithermal gold deposits around the Pacific rim contain > 200 t (‐7 million oz) of gold. These large porphyry‐type deposits conform to a single overall model, whereas the large epithermal gold deposits are varied in both genetic type and mineralisation ...
PORPHYRY COPPER MINERALISATION OF WESTERN USA Allan VIEPS, The University of Melbourne, Victoria 3010, Australia Porphyry copper deposits of western USA are very large low grade deposits dominated by disseminated Cu mineralisation but commonly with appreciable Mo and Au. Many deposits ... Large scale bulk mining of a porphyry deposit ...
Aug 29, 2016· Regional Characteristics of Porphyry Copper Deposits of the Abstract. The largest and best studied concentration of porphyry, type deposits is the Southwest porphyry province in Arizona ...
An important feature of the porphyryepithermal mineral system is the telescoping of different deposit types, for instance porphyry CuAuMo deposits and epithermal deposits of various types. Sources of fluid, metals and energy
6km Vertical Cross Section Through Porphyry Copper Deposits, Yerington District, Nevada: Multiple Intrusions, Fluids, and Metal Sources Marco T. Einaudi, Stanford University
Porphyry deposits. Among the most distinctive hydrothermal deposits is a class known as porphyry copper deposits, so called because they are invariably associated with igneous intrusives that are porphyritic (meaning the rock is a mixture of coarse and fine mineral grains).Porphyry copper deposits (and their close relatives, porphyry molybdenum deposits) contain disseminated mineralization ...
The Suaqui Verde porphyry copper deposit is a small ore body of about 20 million tons of oxide ore grading % copper, located ~ 8 km ENE of the town of Suaqui Grande in eastcentral Sonora, northwestern largest and betterknown deposits occur in northern Sonora, whereas those from central and southern Sonora are smaller and poorly studied.
Advances in Geology of the Porphyry Copper Deposits: Southwestern North America PAGE 85 S. R. Titley (Ed.), The University of Arizona Press, Tucson, xiv + 560 pp., 1982,
phyry copper deposits worldwide, whereas Verde at Refugio is a true porphyry gold deposit. Potassic alteration zones and Aveinlets are strongly developed at Cerro Casale, whereas they are .
BUTTE A WORLD CLASS ORE DEPOSIT Steve J. Czehura, Montana Resources, LLP, Butte, MT Abstract The Butte quartz monzonite is the host rock for early porphyry copper style mineralization and subsequent mesothermalepithermal, enargitegold style veining that transects the district. The eastwest Anaconda system veins:
1 Investigation of the rare elements from the porphyry copper deposits in Romania Project PNIIRUPD Scientific report (abstract)
Alkalic porphyry CuAu deposits: a BC speciality Thomas Bissig, MDRU ... Alkalic porphyry CuAu deposits: alteration model Jensen and Barton, 2000 Distal Propylitic ... Copper Mountain Total Galore Creek AftonAjax Lorraine Ladolam Epithermal Porphyry t A u 1 t Au 1 0 t A u 1 0 0 t A u
exploration of genetic links between breccia pipes and porphyry copper deposits in a laramide hydrothermal system, sombrero butte, pinal county, arizona
The theme was the recent significant new discoveries of porphyry coppergold and hydrothermal gold, and the deposits regions for which previously restricted information was recently released, particularly the Former Soviet Union.