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Porphyry Gold Systems

Gold, 2009). The Colosa porphyry has inferred resources of 468.8 Mt at 0.86 g/t (AngloGold Ashanti, 2008) which makes it the porphyry gold system with the biggest tonnage of material and contained Au discovered to date (Fig. 2). Regional Geologic Setting The Central Cordillera of Colombia has a complex history of collision, accretion, faulting,

  • IGNEOUS PETROLOGY OF THE COLOSA GOLD-RICH … IGNEOUS PETROLOGY OF THE COLOSA GOLD-RICH …

    Gold, 2009). The Colosa porphyry has inferred resources of 468.8 Mt at 0.86 g/t (AngloGold Ashanti, 2008) which makes it the porphyry gold system with the biggest tonnage of material and contained Au discovered to date (Fig. 2). Regional Geologic Setting The Central Cordillera of Colombia has a complex history of collision, accretion, faulting,

  • (PDF) Predicting gold-rich epithermal and porphyry systems ... (PDF) Predicting gold-rich epithermal and porphyry systems ...

    Gold-rich porphyry systems in ference on Principles and Practice of Knowledge Discovery in the Maricunga belt, northern Chile. Economic Geology 8, Databases (PKDD’2000), September 2000, Lyon, France, LNAI 1238 – 1260. 1910. Springer-Verlag, Berlin, Germany, pp. 613 – 618.

  • The geological characteristics, geochemical signature … The geological characteristics, geochemical signature …

    of global porphyry systems. About 5-10% of igneous rocks are high-K, yet these magmas are associated with approximately 25% of the combined Cu+Au+Ag US dollar value of global porphyry and epithermal deposits. The largest and richest gold-bearing, global porphyry systems are related to potassic magmas.

  • Strategic Metals sees gold-rich porphyry system at Mint ... Strategic Metals sees gold-rich porphyry system at Mint ...

    Strategic Metals Ltd. [SMD-TSXV] on Wednesday released what it described as highly encouraging results from a recently completed program involving detailed geological mapping and rock sampling at its Mint porphyry-copper-gold-silver-molybdenum project in southwestern Yukon.Highlights include the delineation of a 300 metre by 300 metre zone featuring strong alteration and abundant well ...

  • Geophysical signatures of copper-gold porphyry and ... Geophysical signatures of copper-gold porphyry and ...

    1.2. The predicted magnetic anomaly over a porphyry copper system 1.3. IP response of a porphyry copper system 1.4. Observed relationship between resistivity and weight percent sulphide content from in situ measurements of porphyry copper deposits 1.5. Cross-section of alteration zones characteristic of high-sulphidation deposits 1.6.

  • A novel conceptual model of intrusion related gold … A novel conceptual model of intrusion related gold …

    gold bearing intrusion related epithermal mineralization. Garnet, pyroxene and wollastonite are characteristic for skarn deposits. Biotite is common alteration product of mesothermal to shallow porphyry systems, whereas potassic feldspar, albite, iron oxide, scapolite and actinolite are associated to deep seated porphyry-IOCG type environments.

  • San Marco Confirms Porphyry Copper-Molybdenum-Gold System ... San Marco Confirms Porphyry Copper-Molybdenum-Gold System ...

    Jan 08, 2019 Vancouver, British Columbia--(Newsfile Corp. - January 8, 2019) - San Marco Resources Inc. (TSXV: SMN) ( San Marco or the Company ) is pleased to announce it has completed a critical first phase of exploration and evaluation which confirms the existence of a porphyry copper-molybdenum-gold system at its 100% owned Espiritu SMR property in Sonora State, Mexico.

  • (PDF) Distribution of gold in porphyry copper deposits (PDF) Distribution of gold in porphyry copper deposits

    porphyry systems where gold mineralization was clearly . epithermal, younger, or distally related to the intrusion. Because . of . the gradational variation . of . gold content and its .

  • Porphyry Copper Systems* Porphyry Copper Systems*

    Introduction PORPHYRY Cu systems are defined as large volumes (10− 100 km3) of hydrothermally altered rock centered on porphyry Cu stocks that may also contain skarn, carbonate-replacement, sediment-hosted, and high- and intermediate-sulfidation epi …

  • Porphyry Deposits: General characteristics and modeling ... Porphyry Deposits: General characteristics and modeling ...

    PORPHYRY MODEL. Porphyry Cu Systems Granitic cupola at 3-10 km depth Hydrothermal alteration & ores at 1 to 6 km depth Central high sulfide & metals Increasing low pH, high fS2 alteration upward in system Transition from deep Ppy Cu to shallow epithermal environm’t Role of non-magmatic fluids traditionally restricted to dilute groundwater (meteoric)

  • Pampa Metals Reports Drilling Results Indicative of a ... Pampa Metals Reports Drilling Results Indicative of a ...

    3 hours ago The principal area of interest is located to the south of holes CBA-RC-07 and 08, and to the north and east of CBA-RC-02, where considerable space for a mineralised porphyry system exists.

  • C3 Metals Identifies Significant Porphyry and Epithermal ... C3 Metals Identifies Significant Porphyry and Epithermal ...

    Aug 30, 2021 The Central Inlier of Jamaica is an important copper-gold porphyry belt that is host to multiple high-level copper-gold porphyry systems and related gold-base metal quartz-carbonate epithermal style vein systems. Although Jamaica is a relatively unknown region for copper and gold exploration it is highly prospective as it lies within a ...

  • The application of ZTEM to porphyry copper-gold … The application of ZTEM to porphyry copper-gold …

    Pebble, Alaska: The Pebble deposit is a major copper-gold porphyry system in southern Alaska. ZTEM results over the deposit have been presented earlier by Par and Legault (2010). The geology (plan and section) are shown in Figure 2. In addition to the ZTEM, Spectrem was flown over the deposit and surrounding area. These results have proven

  • C3 Metals Identifies Significant Porphyry and Epithermal ... C3 Metals Identifies Significant Porphyry and Epithermal ...

    Aug 30, 2021 The Central Inlier of Jamaica is an important copper-gold porphyry belt that is host to multiple high-level copper-gold porphyry systems and related gold …

  • Descriptive model of Porphyry Au - USGS Descriptive model of Porphyry Au - USGS

    ORE CONTROLS/EXPLORATION GUIDES: Zoning of near surface hot-spring Hg-S deposits to zones of vuggy silica and advanced argillic alteration at depth hosting gold and/or silver quartz-chalcedony veins may indicate presence of porphyry gold system at depth of 0.5-1.0 km below paleosurface. Zoning may have a lateral component of 1-3 km. Ore bodies ...

  • Gold-rich porphyry systems in the Maricunga Belt, northern ... Gold-rich porphyry systems in the Maricunga Belt, northern ...

    Oct 01, 1991 Reconstruction of the porphyry systems suggests that gold-bearing quartz stockworks were generated 600 to 1,000 m beneath paleosurfaces.Gold-rich porphyry mineralization in the Maricunga belt is closely comparable to that in the Philippines because of the association with dioritic to quartz dioritic porphyry stocks intruded into andesitic ...

  • Porphyry Systems: Magmatic-Hydrothermal Processes and ... Porphyry Systems: Magmatic-Hydrothermal Processes and ...

    Porphyry systems are a major source of copper and molybdenum, and also a significant source of gold and some critical metals essential to our society. They are formed at convergent margins in syn- and post-subduction settings in genetic association with magmatic rocks and host a variety of economic ore deposits – porphyry, skarn and epithermal mineralization.

  • Gold endowments of porphyry deposits controlled by ... Gold endowments of porphyry deposits controlled by ...

    Jan 14, 2020 As discussed in detail by ref. 28, in shallow porphyry systems ( ~3 km) gold and copper solubility decreases rapidly in an expanding S-rich vapour, which carries both metals. The result is …

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

    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.

  • Intrusion-related gold systems: the present level of ... Intrusion-related gold systems: the present level of ...

    Intrusion-related gold systems: the present level of understanding. James R. Lang 1 & Timothy Baker 1 ...

  • Intrusion Related Gold Deposits vs Porphyry Cu-Au systems ... Intrusion Related Gold Deposits vs Porphyry Cu-Au systems ...

    Gold-rich porphyry systems in the Maricunga Belt, northern Chile. Economic Geology, 86(6), pp.1238-1260. Journal. Witt, W. K. and Hammond, D. P. ARCHEAN GOLD MINERALIZATION IN AN INTRUSION-RELATED, GEOCHEMICALLY ZONED DISTRICT-SCALE ALTERATION SYSTEM IN THE CAROSUE BASIN, WESTERN AUSTRALIA 2008 - Economic Geology.

  • Alkaline-Related Gold Systems: An Overview | Seeking Alpha Alkaline-Related Gold Systems: An Overview | Seeking Alpha

    Jul 15, 2019 Gold to silver ratio is much lower in alkaline porphyry systems than in alkaline epithermal systems. Alteration includes potassium, sodium, propylitic, and …

  • San Marco Confirms Porphyry Copper-Molybdenum-Gold System ... San Marco Confirms Porphyry Copper-Molybdenum-Gold System ...

    Jan 08, 2019 Vancouver, British Columbia--(Newsfile Corp. - January 8, 2019) - San Marco Resources Inc. (TSXV: SMN) ( San Marco or the Company ) is pleased to announce it has completed a critical first phase of exploration and evaluation which confirms the existence of a porphyry copper-molybdenum-gold system at its 100% owned Espiritu SMR property in Sonora State, Mexico.