Apr 23, 2023 · Skarn is coarse-grained metamorphic rocks that forms by a metasomatism. Also called tactites. Skarn tend to be rich in calcium-magnesium-iron-manganese-aluminium silicate minerals that also regerred to calc-silicate minerals.

Oct 3, 2022 · The Jiguanzui skarn Au-Cu deposit in the Middle-Lower Yangtze River Valley Metallogenic Belt (Eastern China) is characterized by abundant pyrite that formed in the main-ore (Py1), late-ore (Py2), and post-ore (Py3) stages, which makes it …

Jul 1, 2024 · Different types of hydrothermal pyrite were identified from the Huangshaping W–Sn–Pb–Zn and Cu–Pb–Zn skarn ores. The mineralization histories were constrained by pyrite texture and geochemistry. Pyrite geochemistry shows good application potential for …

skarn Fe – A. u – C. u – Mo deposits (Fig. 1b; Xie et al. 2011a). Sedimentary rocks exposed in the . 92. district are predominantly marine carbonate and clastic rocks, with ages spanning from the . 93. Cambrian to the Middle Triassic, among which the Triassic Daye Formation (Fm.) limestone and . 94. Puqi . Fm. s. and. y-shale are closely ...

Jan 5, 2025 · Pyrite from reduced skarns have in common high concentrations of Au, Bi, and Ni, while those from oxidized have in common high As, Sb, and Pb. Pyrite trace element composition is effective in discriminating different redox states of skarns.

chalcopyrite in garnet skarn zones, and sphalerite in outer pyroxene and pyroxenoid zone of wollastonite skarn. Extensive hydrous alteration of skarn silicates at this stage

May 1, 2024 · Pyrite from skarn deposits, as a major Co-bearing mineral in this system, provides an effective perspective to study this issue. The Henghui deposit serves as a representative example of Co-rich Fe skarn deposits in the Handan-Xingtai area …

Nov 2, 2007 · The skarn system contains several sulfide species including chalcopyrite, pyrite, pyrrhotite, arsenopyrite, marcasite, sphalerite, and galena, that occur roughly in the order listed from intrusion to marble.

Jun 1, 2023 · Our data, combined with previous studies, show that Co and Ni in pyrite increase toward porphyry and skarn ore, whereas As, Sb, Pb, Ag, and Bi are enriched in pyrite in distal stratabound ore, which extends for 1–2 km away from the intrusion.

Oct 2, 2022 · The Jiguanzui skarn Au-Cu deposit in the Middle-Lower Yangtze River Valley Metallogenic Belt (Eastern China) is characterized by abundant pyrite that formed in the main-ore (Py1), late-ore...