Epithermal deposits in México—Update of current knowledge, and an empirical reclassification

Camprubí, Antoni; Albinson, Tawn

doi:10.1130/2007.2422(14)

Cited by 55 publications

(89 citation statements)

References 74 publications

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“…They are associated with the first bimodal andesitic-rhyolitic volcanic episode of the Upper Volcanic Series of the Sierra Madre Occidental (Camprubi and Albinson, 2007). The regional distribution of the deposits indicates a close association in space with regional faults, which act as paths for the emplacement of magmas; magmas represent the main source of heat and fluid that cause hydrothermal activity and subsequent mineral deposition (Camprubi and Albinson, 2007).…”

Section: Cenozoic Epithermal Ore Depositsmentioning

confidence: 99%

“…and the base metal-rich ones have fluid inclusions with higher salinities, between ~2 and ~20 wt% NaCl equiv. (Camprubi and Albinson, 2007). In most cases, the ores are found in veins (Miranda-Gasca, 2000) (Appendix 1.3).…”

Section: Cenozoic Epithermal Ore Depositsmentioning

confidence: 99%

“…In most cases, the ores are found in veins (Miranda-Gasca, 2000) (Appendix 1.3). A characteristic sequence of mineral precipitation, as described in the Temascaltepec district, is: (1) base metal sulfides: pyrite (or arsenopyrite in other deposits), sphalerite, galena, and chalcopyrite (may contain late argentite-acanthite); (2) Cu ± Ag sulfosalts (usually Agtetrahedrite-tennantite minerals); Ag sulfosalts (proustite-pyrargyrite, pearceitepolybasite, stephanite, miargyrite); and (3) Ag-Pb sulfosalts (Camprubi and Albinson, 2007). A similar precipitation sequence has also been found in case of the Guanajuato, Zacatecas, and Fresnillo deposits.…”

Section: Cenozoic Epithermal Ore Depositsmentioning

confidence: 99%

“…The second phase took place during the Paleocene and was related to the Laramide magmatism in the Sierra Madre Occidental; it produced the Laramide volcanic-plutonic succession of the Lower Volcanic Supergroup (calcalkaline, granodioritic to granitic batholiths that intrude volcano-sedimentary rocks) and generated porphyry copper deposits between about 53 and 63 Ma (Damon et al, 1983;Miranda-Gasca, 2000;Camprubi et al, 2003). The third phase occurred between around 28 and 36 Ma and was associated with the outpouring of volcanic rocks of the Upper Volcanic Supergroup (silicic ignimbrites, rhyolitic domes, and basaltic to andesitic lavas; Moran-Zenteno et al, 1999) in the Sierra Madre Occidental; it produced porphyry copper and epithermal deposits of Middle Eocene to Late Oligocene age (Damon et al, 1983;Camprubi and Albinson, 2007).…”

Section: Introductionmentioning

confidence: 99%

“…The epithermal ore deposits, of Middle Eocene to Late Oligocene age, have been the most economically important type of deposit in Mexico, and the Guerrero terrane includes well-known deposits like Guanajuato, Fresnillo, and Zacatecas. They generally occur along the eastern side of the terrane and are associated with the first bimodal andesitic-rhyolitic volcanic episode of the Upper Volcanic Supergroup of the Sierra Madre Occidental (Camprubi and Albinson, 2007 and precious metal-rich (comparable to low sulfidation type) epithermal deposits (Camprubi and Albinson, 2007). The Pacific margin includes many small to moderate sized iron-oxide rich and gold-and copper-bearing skarn and replacement deposits, designated Fe(-Au-Cu) (Miranda-Gasca, 2000).…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Isotopic Studies of the Guerrero Composite Terrane, West-Central Mexico: Implications for Provenance of Crustal Rocks and Genesis of Ore Metals

Potra¹

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Section: Cenozoic Epithermal Ore Depositsmentioning

confidence: 99%

Section: Cenozoic Epithermal Ore Depositsmentioning

confidence: 99%

Section: Cenozoic Epithermal Ore Depositsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Isotopic Studies of the Guerrero Composite Terrane, West-Central Mexico: Implications for Provenance of Crustal Rocks and Genesis of Ore Metals

Potra¹

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Metallogenesis of the Late Palaeozoic Axi–Tawuerbieke Au–Pb–Zn district in the Tulasu Basin, Western Tianshan, China: Constraints from geological characteristics and isotope geochemistry

Peng

Cheng

et al. 2018

Geological Journal

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The Tulasu Basin is an important epithermal gold ore cluster situated in the Boluokenu Polymetallic Belt, Western Tianshan, China. The Axi Au, Tabei Pb–Zn, and Tawuerbieke Au deposits in this basin represent different types of epithermal mineralization. These are products of the same tectonic‐magmatic‐hydrothermal event, related to the southward subduction of the North Tianshan Ocean beneath the Yili‐Central Tianshan Plate during the Late Devonian to Early Carboniferous. The spatial relationships, preservation levels, and evolution of the three deposits are still debated. Hence, systematic geological field investigations, ore microscopy, and isotopic analyses were carried out on these three deposits. The S–Pb–C–H–O isotopic compositions indicate that the ore‐forming components were derived from the volcanic‐subvolcanic rocks, as well as from circulating meteoric waters. The occurrence of adularia, silicified platy carbonates, and quartz characterized by crustiform/colloform/colloidal textures at Axi indicate that boiling was the main precipitation mechanism for the Au mineralization. The Pb–Zn ores from Tabei are characterized by abundant banded coarse‐grained quartz crystals with dog tooth and comb textures, suggesting that the sulphides precipitated slowly due to conductive cooling. The Tawuerbieke Au deposit is characterized by pervasive silicification and phyllic alteration accompanying veinlet and disseminated ore, which formed via metasomatic water–rock interaction. According to the ore textures, intrusion sizes, and mineral assemblages, it can be inferred that all three deposits experienced different extents of erosion (Axi < Tabei < Tawuerbieke) and that there is exploration potential for concealed porphyry Cu–Au mineralization. Exploration should focus on deep targets beneath the Tawuerbieke Au deposit.

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Fluid evolution and metallogenesis of the Meiling Cu‐polymetallic deposit in the East Tianshan, NW China: Constraints from ore geology, fluid inclusions, stable isotope, and U–Pb geochronology

Cheng

Yang

Zhang³

et al. 2020

Geological Journal

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The Meiling Cu-polymetallic deposit is located in the Kalatag Cu metallogenic belt of the East Tianshan, Xinjiang, NW China. Multiple-stage hydrothermal activities have resulted in the silicification, chlorite alteration and sericite alteration in this deposit. At least three mineralization stages are recorded: (a) a phase comprising quartz-pyrite veining, (b) a quartz-chalcopyrite-pyrite-sphalerite phase and (c) a quartz-calcite phase, respectively. LA-ICP-MS zircon U-Pb dating yielded 302 ± 2.1 Ma for an orebearing quartz porphyry and 296 ± 3.2 Ma for a post-mineralization diorite porphyry dyke, respectively, indicating that the copper mineralization took place during the Late Carboniferous period (302-296 Ma). Fluid evolution during the three stages of mineralization was determined by a detailed fluid inclusion study: (a) Stage I fluids were trapped under two-phase conditions, as evidenced by the coexistence of vapour-rich (type II) inclusions (T h = 183-242 C, average salinity = 4.8 wt% NaCl equiv.), liquid-rich (type I) inclusions (T h = 171-259 C, average salinity = 5.3 wt% NaCl equiv.), and daughter-bearing (type III) inclusions (T h = 192-208 C, average salinity = 8.6 wt% NaCl equiv.). (b) Stage II fluid inclusions in quartz were also trapped under two-phase conditions (boiling), as identified by the coexistence of V-and Ltype fluid inclusions; L-type inclusions T h between 136 and 218 C (average = 189 C), with salinities of 2.2-7.6 wt% NaCl equiv. (average = 3.8 wt% NaCl equiv.). V-type inclusions homogenized temperatures between 153 and 226 C (average = 192 C), with salinities of 2.4-6.7 wt% NaCl equiv. (average = 3.5 wt% NaCl equiv.). (c) Stage III fluids are represented by inclusions in barren quartz-carbonate veinlets, characterized by homogenization temperatures ranging from 98 to 177 C (average = 135 C) and salinities between 0.5 and 3.2 wt% NaCl equiv. (average = 1.9 wt% NaCl equiv.). The initial hydrothermal fluids are characterized by low-intermediate temperature, low-salinity and near-neutral pH condition, belonging to a H 2 O-NaCl bearing hydrothermal system. The mineralization of the Meiling deposit occurred at a shallow

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Epithermal deposits in México—Update of current knowledge, and an empirical reclassification

Cited by 55 publications

References 74 publications

Isotopic Studies of the Guerrero Composite Terrane, West-Central Mexico: Implications for Provenance of Crustal Rocks and Genesis of Ore Metals

Isotopic Studies of the Guerrero Composite Terrane, West-Central Mexico: Implications for Provenance of Crustal Rocks and Genesis of Ore Metals

Metallogenesis of the Late Palaeozoic Axi–Tawuerbieke Au–Pb–Zn district in the Tulasu Basin, Western Tianshan, China: Constraints from geological characteristics and isotope geochemistry

Fluid evolution and metallogenesis of the Meiling Cu‐polymetallic deposit in the East Tianshan, NW China: Constraints from ore geology, fluid inclusions, stable isotope, and U–Pb geochronology

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