Porphyry b veins
WebAug 1, 2024 · Porphyry copper deposits consist of low-grade stockwork and disseminated sulfide zones that contain characteristic vein generations formed during the evolution of … WebJun 1, 2024 · Quartz veins have two orientation modes (azimuth of strike/right-hand dip) that average 233°/50° NW and 295°/45° NE, and D veins have modes of 295°/73° NE, 260°/69° NW, and 228°/48° NW. Quartz and D veins in numerous porphyry deposits globally occupy near-vertical hydrofractures.
Porphyry b veins
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Webveins, with a gangue assemblage of quartz + sericite + calcite + kaolinitc(?) + epidote + chlorite, and a variety of base and precious metal minerals. The coexistence of vapor- and liquid-rich fluid inclusions in vein quartz shows that the molybdenite-bearing anhydrite and quartz veins formed at 360 ø to 410øC from boiling, low-salinity brines. WebThe Grasberg porphyry Cu-Au deposit is located in the Ertsberg District in the Central Range of Papua, Indonesia. The Deep Grasberg is the deepest explored part of the Grasberg Igneous Complex (GIC) at elevations between 2450 and 3050 m, more than 1100 m below the pre-mining surface. ... Quartz occurs widespread stockwork veins and also is the ...
WebThe B veins are composed mainly of quartz, chalcopyrite, and pyrite, formed within the chlorite-sericite alteration zone, and remnants of magnetite are still found. ... ... The 5-10 … WebApr 1, 2024 · The quartz segregations occur at the margins and within the aplite dykes. a & b are from within the Yerington Mine (Yerington porphyry deposit). c is drill core from the Ann Mason porphyry deposit. These textures are likely akin to previous descriptions of ‘parting veins’ in porphyry systems elsewhere (Kirkham and Sinclair, 1988).
Webin the valley bottom, with outcrops of porphyry vein stockwork plus sericite alteration. Drilling discovered the Kupfertal porphyry Cu-Au deposit (biotite ~10.7 Ma) at depths of 200-400 m below the valley floor, with grades up to 0.4 wt% Cu and 0.4 g/t Au, largely below the valley that bisects this world-class high-sulfidation district WebApr 11, 2024 · Quartz-molybdenum or “B-veins” that typically occupy the core of porphyries at Warintza, were encountered at surface at Patrimonio. The highest part of the Patrimonio target, exposed on a...
WebAug 10, 2024 · The B-type quartz are also from early-stage veins commonly associated with potassic alteration, often called B-veins that are more regular than A-veins and sometimes display a visible internal symmetry (Gustafson and Hunt 1975). B-veins postdate A-veins and B-type quartz can also be found in reopened A-veins.
WebDec 15, 2024 · The formation, probably during the Devonian, of a quartz-vein stockwork (1st generation of wolframite, called wolframite “a”; >360 Ma) of porphyry magmatic arc affinity is analogous to the Sn-W belts of the Andes and the Nanling range in China. This stockwork was affected by Barrovian metamorphism, induced by tectonic accretion and crustal ... port of corpus christi commission agendaWebOct 17, 2024 · These so called distinctive "B veins" are classic evidence of mineralized porphyry systems. An independent explanation of B veins can be found at: https: ... in our pursuit of a copper porphyry target indicated by geophysics. That porphyry target is still valid, but it may lie at considerable depth, or it may lie laterally. ... port of corpus christi bridgeWebJun 1, 2024 · The A-veinlets and the B-vein contain hypersaline multiphase (liquid, vapor, halite and Fe-Cu sulphides) and biphase (liquid and vapor) inclusions. In the B-vein the … iron def vs anemia of chronic diseaseWebMay 31, 2014 · In the porphyry deposits, granular A quartz veins, associated with K-feldspar-biotite alteration and disseminated chalcopyrite-magnetite with bornite or pyrite, are typically present within and... iron deficiency aching legsWebMar 23, 2024 · Porphyry vectors identified include: Magnetite veins and deformed porphyry B-Veins, with chalcopyrite and bornite. Leached diorite with interpreted B-veins and interlayered pyrophyllite... port of corpus christi commissionWeb1 day ago · The primary interest has been in our porphyry copper and sediment-hosted copper-silver prospects. ... These so called distinctive "B veins" are classic evidence of mineralized porphyry systems. port of corpus christi commission meetingWebJun 2, 2024 · This fluid is forced to the edge of the granite pluton and forms thick veins or pods. The fluid apparently solidifies rapidly at relatively high temperatures, under conditions that favor a few very large crystals rather … iron deficiency after open heart surgery