Webin the development of epithermal-porphyry deposits, with profound implications on mineral exploration of these vein deposits (Corbett, 2008; Leach and Corbett 2008). Figure 2. WebApr 1, 2024 · Abstract. Intermediate sulfidation (IS) veins is one of the subtypes of epithermal deposits formed in subduction-related arc settings or post-collisional orogenic belts. The economic and scientific significance of IS deposits has been highlighting importance in Ag-Au-Pb-Zn exploration and study of porphyry-epithermal systems.
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WebJan 1, 2024 · Fairview is an epithermal Au prospect approximately 10 km southeast of the Thursdays Gossan porphyry Cu-Au-Mo deposit in the Stavely district of western Victoria (Schofield, 2024). Copper-Au mineralization in this district is primarily hosted within a series of andesitic volcanic and intrusive rocks belonging to the Cambrian Stavely Arc. WebThis paper is a work in progress based upon my experiences in the exploration for, and evaluation of, magmatic arc epithermal gold and porphyry copper-gold deposits (Figure 1). It therefore draws upon, and updates, recent studies (Corbett and Leach, 1998; Corbett, 2001a & 2001b). This review focuses upon the essential features of the different ...
WebJan 1, 2024 · The Tumpangpitu porphyry and high-intermediate-sulfidation epithermal deposit is the largest deposit in the Tujuh Bukit district, southeast Java, Indonesia. The porphyry resource contains 1.9 billion tonnes @ 0.45% Cu and 0.45 g/t Au, for 28.1 Moz Au and 19 billion lbs of Cu.
WebPorphyry systems and epithermal deposits 863 It must be noted that these assessment results do not in any way imply the potential for discovery of any of the estimated undiscovered resources. WebThe Mankayan mineral district of northern Luzon, Philippines, hosts several significant ore deposits and prospects of various types within an area of ~25 km 2 , including the Far Southeast porphyry Cu-Au deposit, the Lepanto high sulfidation epithermal Cu-Au deposit, the Victoria intermediate sulfidation epithermal Au-Ag vein deposit, the Teresa epithermal …
Mineral deposits that form in the porphyry-epithermal mineral system generally have a spatial and temporal association with intermediate to felsic sub-aerial volcanic rocks and related sub-volcanic intrusions. Although, geologically recent porphyry-epithermal mineral systems are mostly thought to form in … See more Although most workers concur that magmas were probably the energy source in the porphyry-epithermal mineral system, the evidence is not definitive as to the role of magmatic-hydrothermal fluids as sources of fluid, sulfur … See more In the porphyry-epithermal mineral system, pathways for fluids and their contained metals, ligands and sulfur include faults, stratigraphic aquifers and crystallising intrusive bodies. … See more Because of the lack of major, geologically young, felsic to intermediate (i.e., Mesozoic and younger) magmatic belts, deposits of the … See more Mechanisms for ore deposition in the porphyry-epithermal mineral system are many and varied, with the main mechanisms being depressurisation and associated processes such as boiling, fluid mixing, cooling, … See more
Webthe porphyry and epithermal deposits in northern Peru are closer in location and age. The major high-sulfidation deposits, from north to south, are Yanacocha (a series of deposits formed at 13.6 to 8.2 Ma), Lagunas Norte (~17 Ma), Calaorco (La Arena; 25.8 Ma) and Pierina (14.5 Ma), with the intermediate (to high-) sulfidation veins of dereham weatherspoonsWebMar 1, 2009 · Porphyry Cu ± Mo ± Au and some epithermal Au deposits are formed from hydrothermal fluids exsolved from cooling, water-rich, calc-alkaline magmas emplaced in … chronicles of odumkrom the headmasterWebOct 13, 2013 · However, recently this paradigm has been challenged by the recognition that ore fluids in sediment-hosted 3,4,5, epithermal 6,7 and porphyry-related 8,9,10 … dereham windmill cafeWebDec 1, 2011 · Quartz-carbonate-base metal sulfide style epithermal gold-silver veins are well-developed on the eastern side of the Baguio district, and crosscut porphyry-style … dereham weather todayWebAug 5, 2024 · The contrasting metal ratios between porphyry and epithermal deposits (Fig. 1d) likely reflect hydrothermal processes that fractionated Cu from Au and Te (Fig. 2b) between the higher temperature ... chronicles of numbers shreveport laWebAlkalic Epithermal Deposits The alkalic epithermal systems have features similar to the “low sulfidation” family of calc-alkalic epithermal deposits. Discriminating features include the presence of roscoelite (e.g., Porgera, Emperor), and anhydrite (e.g., Lihir, Porgera), and negative sulfur isotopic compositions of sulfide chronicles of piyeWebMay 2, 2024 · The Stypsi porphyry-epithermal deposit is a telescoped porphyry-epithermal IS system which shares similarities with other deposits of the Aegen Area and of Anatolia … chronicles of prey 2 ver2 rar