"porphyry copper systems exposed"

Mindoro Resources Ltd

2004-9-15 · EDMONTON, AB; Sep. 15, 2004 - Mindoro Resources Ltd. (TSX-V: MIO; Frankfurt: OLM) today announced that recent geological results confirm the presence of an extensive porphyry copper-gold system on its Archangel Project. The system is mapped over 5km by 2km and exposed at lower topographic elevations, immediately below the epithermal gold-silver mineralization, previously …

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

2014-5-28 · Porphyry copper deposits are generally composed of a "plug-like" igneous intrusion – a large magma body that is emplaced beneath a volcanic system. On average these deposits can have a vertical and horizontal extent of 1-2 km and can range from tens of millions to more than one billion tons in size. While copper …

Crustal shortening and porphyry copper mineralization in ...

2019-9-4 · Most porphyry copper ore bodies were developed at intermediate depths, where porphyry intrusions exhibit sericitic and potassic alteration and carbonate rocks were converted to skarn, such as in the heart of the Miami-Inspiration, Resolution, Ray, and Christmas deposits. ... Resolution, Ray, and Christmas deposits. Plutonic rocks are exposed at ...

Undiscovered porphyry copper resources in the Urals—A ...

2017-5-1 · Identified resources have been reported for eight porphyry copper deposits in the Urals ().Note that the identified resources for the smallest porphyry copper deposits listed in Table 1, Yubileinoe and Birgilda, were classified as porphyry copper prospects by Singer et al. (2008); Tarutino is primarily a skarn deposit.Some of the tonnage and grade data meet current internationally accepted ...

Dismembered Porphyry Systems near Wickenburg, …

2018-8-7 · Laramide porphyry copper belt in the White Picacho and Sheep Mountain districts (Keith et al., 1983), near the town of Wickenburg in central Arizona (Fig. 2), and provides the first public description, notwithstanding company reports, of hydrothermal features observed in the Copper Basin (Crown King) and Sheep Mountain porphyry systems. Previous

Understanding how porphyry-type copper deposits are …

2021-3-21 · To reach these findings, the experts conducted field studies and micro-textural and geochemical analyses of samples from the archetypal Yerington porphyry district in Nevada, where an ~8-kilometre palaeo-vertical cross-section through a number of porphyry copper deposit systems is exposed.

Supergene Enrichment

2015-6-27 · porphyry copper system that has been exposed by erosion. Summarizing the primary (hypogene) alteration and mineralization observed in porphyry copper systems, the low grade potassic core is located at the center of the system. It is characterized by quartz, potassium feldspar, biotite and anhydrite with minor amounts of sulfide-bearing minerals

Porphyry Copper Deposits of the American Cordillera

2019-12-14 · of porphyry copper systems. This increase began in the early 1960s, and the numbers of publications reached a peak during the late 1970s and early 1980s. The period was witness to appli­ ... Remnants of subaerial flows are widely exposed through the re­ ...

Porphyry Copper Systems*

2012-8-4 · Porphyry Copper Systems* RICHARD H. SILLITOE† 27 West Hill Park, Highgate Village, London N6 6ND, England Abstract Porphyry Cu systems host some of the most widely distributed mineralization types at convergent plate boundaries, including porphyry deposits centered on intrusions; skarn, carbonate-replacement, and sediment-

Henderson Porphyry Molybdenum System, Colorado: I ...

2019-3-1 · Certain genetic aspects of the porphyry system at Hender-son are more tightly constrained than in any porphyry copper system, including those that are well exposed by postmineral tilting and/or deep drilling and that are well mapped and doc-umented, such as …

New Boston

Porphyry Copper Systems | Request PDF - ResearchGate

Cooling and exhumation of the mid-Jurassic porphyry …

2014-12-26 · Abstract The Dexing porphyry copper and Yinshan polymetallic deposits in Dexing City, southeastern China are both giant porphyry ore systems. Located 15 km apart, they formed synchronously and share a similar magma source and metallogenicevolution,but theirmetalendowment,dominant rock types, and alteration assemblages differ significantly. In

Porphyry Copper Discovery Beneath the Valeriano …

2019-7-12 · Exploration for porphyry copper deposits beneath barren or poorly mineralized, advanced argillic lithocaps is becoming common-place; however, there have been few discoveries except in cases where the copper ± gold ± molybdenum min-eralization has been partly exposed, typically as a result of partial lithocap erosion. At Valeriano, in the high

Coarse Muscovite Veins and Alteration in Porphyry Systems

2019-8-1 · Coarse muscovite veins and alteration occur in porphyry copper and porphyry molybdenum-copper systems within the Laramide arc in Arizona, as well as at the Yerington district in Nevada.

The porphyry copper deposit exposed in the Liberty open ...

The porphyry copper deposit exposed in the Liberty open-pit mine near Ely, Nevada; Part 1, Syngenetic Formation ... porphyry complex took place simultaneously with the continued injection and crystallization of magma from deeper in the system rst, K-feldspar partly replaced plagioclase and later, muscovite replaced most of the remaining ...

Large-Scale Sodic-Calcic Alteration Around Porphyry …

2019-4-22 · Large-Scale Sodic-Calcic Alteration Around Porphyry Copper Systems: Examples from the Highland Valley Copper District, Guichon Batholith, South-Central British Columbia K. Byrne, University of Alberta, Edmonton, AB, [email protected] G. Lesage, Mineral Deposit Research Unit, The University of British Columbia, Vancouver, BC

Porphyry Copper Assessment of Mexico

2010-9-29 · Most porphyry copper exploration in Mexico focused on the exposed northern parts of the Laramide arc. This assessment suggests that the exposed and shallowly buried ( 1 km) parts of the Laramide and Tertiary arcs delineated as permissive tracts …

Coarse muscovite veins and alteration in porphyry systems ...

2019-10-1 · 1. Introduction. Exploration for porphyry copper deposits has been guided by hydrothermal alteration patterns, which have been a focus of study for over a century (e.g., Lindgren, 1933, Lowell and Guilbert, 1970, Titley and Beane, 1981).Dismemberment and tilting of many deposits in the Basin and Range extensional province has exposed deep and distal portions of certain porphyry copper systems ...

Understanding how porphyry-type copper deposits are …

2021-3-21 · UK-based researchers found the missing link in models that explain the formation of porphyry-type copper ... cross-section through a number of porphyry copper deposit systems is exposed…

(PDF) Porphyry Copper Systems | Daniela Olivares Sedan ...

Porphyry Copper Systems. ©2010 Society of Economic Geologists, Inc. Economic Geology, v. 105, pp. 3–41 Porphyry Copper Systems* RICHARD H. SILLITOE† 27 West Hill Park, Highgate Village, London N6 6ND, England Abstract Porphyry Cu systems host some of the most widely distributed mineralization types at convergent plate boundaries, including ...

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

2016-7-14 · systems have allowed us to apply time to porphyry systems and better understand their staged evolution as well as the evolved hydrothermal fluids which participate in low sulphidation epithermal vein formation (figure 3). Porphyry Au-Cu-Mo Although porphyry Au-Cu-Mo deposits display considerable variation, some broad generalisations are possible.

Pleistocene recycling of copper at a porphyry system ...

2016-8-30 · when exposed to meteoric water (Cameron et al. 2007). ... Fe-hydroxides, hematite, and jarosite) of porphyry copper systems is commonly characterized by isotopically lighter ... porphyry copper deposit (Atacama Desert), along with Cu isotope data of chrysocolla, chalcocite, and chalco-

Deep Hydrothermal Alteration in Porphyry Copper …

Multiple generations of normal faults dismembered, tilted, and exposed thicknesses of up to 15 km of the upper crust in portions of central and southern Arizona. This extension, variable in distribution and magnitude, was superimposed on the axis of the Laramide magmatic arc and dismembers many porphyry copper systems, allowing for detailed ...

Cooling and exhumation of the mid-Jurassic porphyry …

The Dexing porphyry copper and Yinshan polymetallic deposits in Dexing City, southeastern China are both giant porphyry ore systems. Located 15 km apart, they formed synchronously and share a similar magma source and metallogenic evolution, but their metal endowment, dominant rock types, and alteration assemblages differ significantly. In this contribution, we investigate the cause of these ...

Preliminary Model of Porphyry Copper Deposits

2008-10-9 · 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 …

Porphyry Copper Systems | Request PDF

Porphyry Cu systems host some of the most widely distributed mineralization types at convergent plate boundaries, including porphyry deposits centered on intrusions; skarn, carbonate-replacement ...

Global mineral resource assessment: porphyry copper ...

Most porphyry copper exploration in Mexico focused on the exposed northern parts of the Laramide arc. This assessment suggests that the exposed and shallowly buried (<1 km) parts of the Laramide and Tertiary arcs delineated as permissive tracts are more likely to contain undiscovered deposits than are older (Jurassic-Early Cretaceous) arc segments.