preliminary model of porphyry copper deposits usgs

Anatomy of Porphyry-Related Mineralised Au-Cu-Ag-Mo …

Corbett Geological Services, PO Box 282, Willoughby, NSW 2068 ... have facilitated an understanding of the implications to explorationists of the anatomy of porphyry related Au-Cu-Mo-Ag mineralising systems. Deeply eroded magmatic source rocks ... while porphyry Mo deposits are associated within more siliceous quartz monzonite and

copper deposits worldwide - swanlake.org.in

usgs report on porphyry copper deposits worldwide. Copper mining in the United States - … Copper mining in the United States ... The open-pit mining of porphyry copper deposits was adopted worldwide. ... Preliminary Model of Porphyry Copper Deposits. There are many important deposits, worldwide (cf. Singer and others, 2008). Examples of well ...

What is a Porphyry Copper Deposit? by David F. Briggs on ...

porphyry copper deposits were the first type of metallic mineral deposit to be exploited by large- scale, bulk tonnage, open pit mining methods. Economies of scale and advances in technology have

USGS: Mineral Resources On-Line Spatial Data: copper

This study delineated permissive areas for undiscovered porphyry copper deposits, compiled a database of known deposits and significant prospects, estimated undiscovered deposits within those areas and made probabilistic estimates of their metal content. Database of significant deposits of gold, silver, copper, lead, and zinc in the United States

Characteristics and genesis of Gangdese porphyry copper ...

Characteristics and genesis of Gangdese porphyry copper deposits in the southern Tibetan Plateau: Preliminary geochemical and geochronological results. ... from the copper belt yielded isochron ages of 14.76 ± 0.22 Ma and 13.99 ± 0.16 Ma for the Nanmu and Cang deposits and model ages of 13.5 to 13.6 Ma for the Lakang'e deposit.

Preliminary model of porphyry copper deposits - USGS

This update is a preliminary model of porphyry copper deposits that begins an update process of porphyry copper models published in USGS Bulletin 1693 in 1986. This update includes a greater variety of deposit attributes than were included in the 1986 model as …

Technical Announcement: USGS Puts Global Copper ...

Technical Announcement: USGS Puts Global Copper Assessments on the Map. USGS Puts Global Copper Assessments on the Map ... and resource potential of porphyry copper and sediment-hosted copper deposits and to model grade and resource tonnage. This report can be found here.

ore type porphyry - amarcord.co.za

Preliminary Model of Porphyry Copper Deposits. Preliminary Model of Porphyry Copper Deposits Byron R. Berger, Representative host rock types are shown in Table 1. Ore is sometimes hosted in volcanic and >>Advisory

Paper: Engineering geological modelling for pit slope ...

Engineering geological modelling for pit slope design in the porphyry copper-gold deposits of Southeast Asia. ... Wynn, JC & Seal, RR 2008, Preliminary model of porphyry copper deposits, USGS Open File Report 2008–1321. British Geological Survey 2007, Copper commodity profile, BGS Natural Environment Research Council, June.

L - Porphyry - British Columbia

Differences in composition between the hostrock alkalic and calcalkalic intrusions and subtle, but significant, differences in alteration mineralogy and zoning patterns provide fundamental geologically based contrasts between deposit model types. Porphyry copper deposits associated with calcalkaline hostrocks are described in mineral deposit ...

Porphyry copper deposits of the world - data.doi.gov

Information on porphyry copper deposits from around the world with grade and tonnage models, a general classification based on geologic setting, mineralogy, with data allowing locations of these deposits to be plotted using GIS.

Advances in Geological Models and Exploration Methods for ...

Advances in Geological Models and Exploration Methods for Copper ± Gold Porphyry Deposits Holliday, J. R. [1], ... University of Tasmania, Tasmania, Australia ABSTRACT This paper focuses on the relationships between the geological model and exploration techniques for porphyry Cu ± Au deposits, with ... The ore deposit model for porphyry Cu ...

Delineation of mineralization zones in porphyry Cu ...

Correlation of C–V model with geological models. ... A.E. Williams-JonesControls of alteration and mineralization in the Sungun porphyry copper deposit, Iran: evidence from fluid inclusions and stable isotopes. ... U. S. Geological Survey professional paper, Vol. 907–D (1976) 16 pp. Ortega et …

Porphyry | Mining Geology HQ

Preliminary Model of Porphyry Copper Deposits (2008) Berger, B.R., Ayuso, R.A., Wynn, J.C., and Seal, R.R., U.S. Geological Survey Open-File Report 2008–1321, 55 p. A Tectonic Model for the Spatial Occurrence of Porphyry Copper and Polymetallic Vein Deposits—Applications to …

USGS Open-File Report 2008-1321: Preliminary Model of ...

This update is a preliminary model of porphyry copper deposits that begins an update process of porphyry copper models published in USGS Bulletin 1693 in 1986. This update includes a greater variety of deposit attributes than were included in the 1986 model as …

Update Mineral Deposit Models - USGS

Task Objectives. A first-order problem in mineral-resource assessments concerns how to integrate geology, geochemistry, geophysics, exploration history, and known deposits and occurrences.

Preliminary Model of Porphyry Copper Deposits: Open-File ...

This update is a preliminary model of porphyry copper deposits that begins an update process of porphyry copper models published in USGS Bulletin 1693 in 1986. This update includes a greater variety of deposit attributes than were included in the 1986 model as …

Delineation of mineralization zones in porphyry Cu ...

Customized geological methods for zone detection and recognition in porphyry deposits are usually based on mineralographical, petrographical and alteration assemblages of alterated minerals, specifically in potassic and phyllic alteration types (Beane, 1982, Berger et al., 2008, Schwartz, 1947, Sillitoe, 1997).

Preliminary Model of Porphyry Copper Deposits - USGS

Preliminary Model of Porphyry Copper Deposits Byron R. Berger, Robert A. Ayuso, Jeff C. Wynn, and Robert R. Seal Introduction 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.

CHAPTER 4 PORPHYRY DEPOSITS - British Columbia

CHAPTER 4 PORPHYRY DEPOSITS CLASSIFICATION AND GEOLOGICAL CHARACTERISTICS The development of the first porphyry copper and molybdenum deposits in British Columbia in the 1960s and 1970s had a profound effect on the mining commu-nity (Newell et al., 1995). It was recognized that large, low-grade, deposits could be mined economically by

Porphyry copper deposit - Wikipedia

The US Geological Survey has classed the Chorolque and Catavi tin deposits in Bolivia as porphyry tin deposits. Some porphyry copper deposits in oceanic crust environments, such as those in the Philippines, Indonesia, and Papua New Guinea, are sufficiently rich in gold that they are called copper-gold porphyry deposits. References

copper deposits worldwide - swanlake.org.in

Preliminary Model of Porphyry Copper Deposits There are many important deposits, worldwide (cf. Singer and others, 2008). Examples of well-studied giant porphyry copper deposits include El Teniente and El Salvador in Chile, Bajo de la ...

Preliminary Model of Porphiry Copper Deposits | Igneous ...

1 Preliminary Model of Porphyry Copper Deposits Byron R. Robert A. including skarns. and skarn mineral zoning patterns may be useful in the targeting of a potentially associated porphyry copper deposit (Meinert and others. this descriptive model uses a working definition of a porphyry copper deposit. often porphyritic. if not genetically ...

The Great Porphyry Copper Deposits of Arizona – Geology ...

The lowell and guilbert model of porphyry copper deposits (based on arizona examples) These deposits have been scientifically studied since the 1900's by the USGS and this in depth study over a long period of time has made this region the "type" area for the description of porphyry copper deposits.

Preliminary Model of Porphiry Copper Deposits | Igneous ...

Preliminary Model of Porphyry Copper Deposits. Open-File Report 2008–1321 U.S. Department of the Interior U.S. Geological Survey Preliminary Model of Porphyry Copper Deposits By Byron R. Berger, Robert A. Ayuso, Jeffrey C. Wynn, and Robert R. Seal Open-File Report 2008–1321 U.S. Department of the Interior U.S. Geological Survey

Porphyry Deposits: The World's Largest Source of Copper ...

Porphyry copper deposits are generally composed of a "plug-like" igneous intrusion – a large magma body that is emplaced beneath a volcanic system. ... Developing an integrated exploration model MRDU (Mineral Deposits Research Unit) Stikine Terrane Cu, Cu-Au & Mo Porphyry Deposits BC Geological Survey. Red Chris Copper-Gold Porphyry

Preliminary model of porphyry Copper deposits ...

1 Preliminary Model of Porphyry Copper Deposits Byron R. Berger, Robert A. Ayuso, Jeff C. Wynn, and Robert R. Seal Introduction Porphyry copper deposits result from the complex interactions and feedbacks of many processes.

What is a Porphyry Copper Deposit?

porphyry copper deposits were the first type of metallic mineral deposit to be exploited by large- scale, bulk tonnage, open pit mining methods. Economies of scale and advances in technology have