Ore Mineralogy and Fluid Inclusion Constraints on the Temporal and Spatial Evolution of a High-Sulfidation Epithermal Cu-Au-Ag Deposit in the Recsk Ore Complex, Hungary*

Takács, Ágnes; Molnár, Ferenc; Turi, Judit; Mogessie, Aberra; Menzies, John C.

doi:10.5382/econgeo.2017.4517

Cited by 18 publications

(2 citation statements)

References 23 publications

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“…These min eral re la tion ships, in di cat ing the paragenetic sequence he ma tite-chal co py rite-en ar gite and luzonite-ten nantite, sug gest an early in ter me di ate sulphidation en vi ron ment (he ma tite and chal co py rite) fol lowed by a pas sage to wards high-sulphidation con di tions as in di cated by chal co py rite replace ment by en ar gite/luzonite and a fi nal over print by an in terme di ate sulphidation stage sug gested by en ar gite/luzonite replace ment by ten nan tite and the ab sence of bornite and py rite. Sim i lar sulphidation state evo lu tion trend was found in the Recsk por phyry-skarn-epi ther mal met al lo gen ic sys tem, Hungary, by Takács et al (2017). The abun dant hypogene kaolinite closely re lated to the en ar gite-ten nan tite-chal co py rite min eral as sem blage in di cates the in ter me di ate/high sulphidation state.…”

Section: Ta Blementioning

confidence: 81%

“…4C). Man ga nese-free fahlore min er als were re ported by Takács et al (2017) from the Lahóca Hill, Recsk ore complex, Hun gary, from pre-and post-en ar gite depositional stages in HS ore bod ies. Contrastingly, fahlore min er als con tain ing Mn were iden ti fied by the same au thors in the Lejtanka tran si tional HS-IS and Parád IS de pos its from the Recsk ore com plex, Hungary, and these geo chem i cal pe cu liar i ties were con sid ered ev idence of lower sulphidation state hy dro ther mal flu ids, likely respon si ble for IS min er al iza tion.…”

Section: Ta Blementioning

confidence: 99%

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Cu3(As,Sb)S4 minerals from the Baia Mare metallogenic district, Eastern Carpathians, Romania – a case study from the Cisma ore deposit

Kovács

Tămaş

2020

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2 Vic tor Gorduza County Min er al og i cal Mu seum of Baia Mare, 8 Traian bou le vard, 430212 Baia Mare, Ro ma nia Kovács, R., Tãmaê, C.G., 2020. Cu 3 (As,Sb)S 4 min er als from the Baia Mare met al lo gen ic dis trict, East ern Carpathians, Roma nia -a case study from the Cisma ore de posit. Geo log i cal Quar terly, 64 (2): 263-274, doi: 10.7306/gq.1529 As so ci ate Ed i tor: S³awomir OszczepalskiThe oc cur rence of Cu 3 (As,Sb)S 4 min er als, i.e. the en ar gite and luzonite-famatinite se ries, is poorly known in the Neo gene Baia Mare met al lo gen ic dis trict, NW Ro ma nia, with few re cords and no an a lyt i cal data. This study pro vides the first EPMA and XRD data on en ar gite/luzonite from the Baia Mare met al lo gen ic dis trict, i.e. the Cisma ore de posit from the Bãiuï met allo gen ic field, and the Herja ore de posit. Vein-type ore bod ies bear ing Cu 3 (As,Sb)S 4 min er als from Cisma are hosted by Paleocene-Eocene flysch suc ces sions, while the host rock of the en ar gite-bear ing ore from Herja is un known. The en ar gite and luzonite-famatinite se ries are known as "ex otic" in low sulphidation epi ther mal ore de pos its, "typ i cal" in high sulphidation epi ther mal de pos its in as so ci a tion with ten nan tite, and "some times com mon" in small amounts in in ter me di ate sulphidation epi ther mal ore de pos its. The oc cur rence of en ar gite/luzonite in the Baia Mare dis trict sug gests the need to up date the met allo gen ic in ter pre ta tion for sev eral ore de pos its, partly at the dis trict scale in re la tion to other ore de posit/min er al ogy fea tures, e.g. vug gy sil ica, hypogene argillic al ter ation.

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Section: Ta Blementioning

confidence: 81%

Section: Ta Blementioning

confidence: 99%

Cu3(As,Sb)S4 minerals from the Baia Mare metallogenic district, Eastern Carpathians, Romania – a case study from the Cisma ore deposit

Kovács

Tămaş

2020

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Mineralization of the Luanling gold deposit in the southern margin of the North China Craton: Insights from mineralogy and mineral chemistry of sulfides, tellurides and oxides

Meng

Gao

et al. 2020

Geological Journal

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The Luanling gold deposit, a typical Te‐Au deposit in the Xiong'er terrane, the southern margin of the North China Craton, contains two types of ores, namely altered rock‐type and quartz vein‐type ores. Gold is hosted by pyrite and As‐bearing pyrite in the altered rock‐type ores, whereas tellurides are the main gold carriers in the quartz vein‐type ores. In order to investigate their origins, we calculated the Gibbs free energies of formation and reaction of related sulfides, tellurides and oxides from different ore types. The phase diagrams of these minerals were constructed at 300 °C, a temperature at which gold was mainly precipitated in the Luanling deposit. According to phase relations among sulfides, logfS2(g) is constrained between −10.4 and −6.5. In addition, we propose that [Au(HS)2]− was the dominant carrier of gold in ore‐forming fluid, and its decomposition formed pyrite and arsenian pyrite, in which gold mainly exists as an invisible phase. In the quartz vein‐type ores, logfTe2(g) and logfO2(g) are constrained to range from −13.68 to −7.9 and −36.8 to −31.1, respectively, based on the phase relations between tellurides, sulfides and oxides, and gold was mainly transported as [Au(HTe)2]− and its break down formed gold‐bearing, including sylvanite, petzite and Au‐Ag‐tellurides. Sylvanite and petzite, the two stable Au‐Ag tellurides, were probably precipitated primarily from hotter ore‐forming fluids. According to phase relations among tellurides, the two phases were decomposed into native gold, hessite and more stable Au‐Ag‐tellurides with the changes of physicochemical conditions in the later stages. In addition, we proposed that the ore‐forming fluids relevant to the altered rock‐ and the quartz vein‐type ores were from the same source and continuously evolved.

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Infrared microthermometry of fluid inclusions in transparent to opaque minerals: challenges and new insights

et al. 2020

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Ore Mineralogy and Fluid Inclusion Constraints on the Temporal and Spatial Evolution of a High-Sulfidation Epithermal Cu-Au-Ag Deposit in the Recsk Ore Complex, Hungary*

Cited by 18 publications

References 23 publications

Cu3(As,Sb)S4 minerals from the Baia Mare metallogenic district, Eastern Carpathians, Romania – a case study from the Cisma ore deposit

Cu3(As,Sb)S4 minerals from the Baia Mare metallogenic district, Eastern Carpathians, Romania – a case study from the Cisma ore deposit

Mineralization of the Luanling gold deposit in the southern margin of the North China Craton: Insights from mineralogy and mineral chemistry of sulfides, tellurides and oxides

Infrared microthermometry of fluid inclusions in transparent to opaque minerals: challenges and new insights

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