Geochemical characteristics of mercurian tetrahedrite, barite and fluorite from the Duboki Vagan, Glumac and Dubrave-Dugi Dol barite deposits, south of Kreševo, Mid-Bosnian Schist Mts.

Jurković, Ivan; Garašić, Vesnica; Jurković, Ivan

doi:10.4154/gc.2011.05

Cited by 10 publications

(9 citation statements)

References 14 publications

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“…They infer complete miscibility between mercurian giraudite and hakite in nature, analogous to tetrahedrite and tennantite. Jurković et al (2011a) [52] report mercurian tetrahedrite from the Duboki Vagan barite deposit, south of Kreševo, Bosnia, containing up to 3.795 wt % Hg.…”

Section: Documented Substitutionsmentioning

confidence: 99%

Minor and Trace Elements in Natural Tetrahedrite-Tennantite: Effects on Element Partitioning among Base Metal Sulphides

2017

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Minerals of the tetrahedrite isotypic series are widespread components of base metal ores, where they co-exist with common base metal sulphides (BMS) such as sphalerite, galena, and chalcopyrite. We used electron probe microanalysis and laser-ablation inductively-coupled plasma mass spectrometry to obtain quantitative multi-trace element data on tetrahedrite-tennantite in a suite of 37 samples from different deposits with the objective of understanding which trace elements can be incorporated, at what levels of concentration, and how the presence of tetrahedrite-tennantite influences patterns of trace element partitioning in base metal ores. Apart from Fe and Zn, Hg and Pb are the two most abundant divalent cations present in the analysed tetrahedrite-tennantite (up to 10.6 wt % Hg and 4 wt % Pb). Cadmium, Co and Mn are also often present at concentrations exceeding 1000 ppm. Apart from one particularly Te-rich tetrahedrite, most contained very little Te (around 1 ppm), irrespective of prevailing assemblage. Bismuth is a common minor component of tetrahedrite-tennantite (commonly > 1000 ppm). Tetrahedrite-tennantite typically hosts between 0.1 and 1000 ppm Se, while Sn concentrations are typically between 0.01 and 100 ppm. Concentrations of Ni, Ga, Mo, In, Au, and Tl are rarely, if ever, greater than 10 ppm in tetrahedrite-tennantite and measured W concentrations are consistently <1 ppm. Taking into account the trace element concentrations in co-crystallizing BMS, the results presented allow the partitioning trends between co-crystallized sphalerite, galena, chalcopyrite, and tetrahedrite-tennantite to be defined. In co-crystallizing BMS assemblages, tetrahedrite-tennantite will always be the primary host of Ag, Fe, Cu, Zn, As, and Sb, and will be the secondary host of Cd, Hg, and Bi. In contrast, tetrahedrite-tennantite is a poor host for the critical metals Ga, In, and Sn, all of which prefer to partition to co-crystallizing BMS. This study shows that tetrahedrite-tennantite is a significant carrier of a range of trace elements at concentrations measurable using contemporary instrumentation. This should be recognized when establishing protocols for trace element analysis of tetrahedrite-tennantite, and when assessing the main hosts of trace elements in any given assemblage, e.g., for geometallurgical purposes.

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Section: Documented Substitutionsmentioning

confidence: 99%

Minor and Trace Elements in Natural Tetrahedrite-Tennantite: Effects on Element Partitioning among Base Metal Sulphides

2017

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“…Thus, it is not possible to evaluate the importance of this ratio as a discriminating feature for barite from different origins. The barite from vein-and metasomatic-type of Duboki Vagan deposit in Bosnia possesses Y/Ho ratios of 3.44 and 5.21 (n=2) (Jurković et al 2011). These ratios are slightly lower than those of barite from Farsesh deposit, indicating that terrestrial (vein) barite has apparently lower Y/Ho ratios than marine barite.…”

Section: Microthermometric Measurementsmentioning

confidence: 88%

“…(3) open-space filling textures of barite and calcite reveal the deposition of these minerals by hydrothermal activities; (4) low ∑REE concentrations, LREEenriched chondrite-normalized REE patterns, extremely low Ce anomalies, low Ce/La ratios, and positive La and Gd anomalies of barite are commonly considered as particular features of marine precipitates (including barite) deposited from hydrothermally influenced seawater (Guichard et al 1979;Jewell and Stallard 1991;Chen et al 2006;Alexander et al 2008;Jurković et al 2011);(5) sulfur isotope data are also consistent with deposition of barite from hydrothermal fluid entrained in seawater; and (6) studying the fluid inclusion of Farsesh mineralization may put constraints on the origin and evolution of the ore-forming fluid. Highly variable liquid-vapor ratios in primary fluid inclusions hosted by barite with two modes of 150 to 250°C indicated that the barite was deposited from more heated fluids under boiling conditions.…”

Section: Origin and Genetic Model Of Farsesh Baritementioning

confidence: 98%

Geology, geochemistry, sulfur isotope composition, and fluid inclusion data of Farsesh barite deposit, Lorestan Province, Iran

et al. 2014

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Farsesh barite in the central part of Iranian SanandajSirjan zone is a sample of epigenetic hydrothermal mineralization in dolomitized limestone, which provides appropriate chemicophysical conditions making the passage of mineralbearing fluids possible. Barite veins may range from a few centimeters to 2 m in thickness that increases downward. The microthermometry measurements obtained from more than 30 fluid inclusions show relative homogenization temperatures ranging from 125 to 200°C with an average of 110°C for Farsesh barite deposits. The mean salinity measured proves 16 times as much as weight percentage of NaCl for barite. Coexistence of liquid-and vapor-rich fluid inclusions in barite minerals may provide an evidence of boiling in ore veins. Moreover, occurrence of bladed calcite, high-grade ore zones, and presence of hydrothermal breccia are all consistent with boiling. Thermometric studies indicate that homogenization temperatures (Th) for primary and pseudosecondary fluid inclusions in barite range from 125 to 200°C with an average of 1,100°C. The δ 34 S values of barite also lie between 8.88 and 16.6 %. The relatively narrow spread in δ 34 S values may suggest uniform environmental conditions throughout the mineralization field. Thus, δ 34 S values are lower than those of contemporaneous seawater, which indicates a contribution of magmatic sulfur to the ore-forming solution. Barite is marked by total amounts of rare Earth elements (REEs) (6.25-17.39 ppm). Moreover, chondrite-normalized REE patterns of barite indicate a fractionation of light REEs (i.e., LREEs) from La to Sm, similar to those for barite from different origins. The La CN /Lu CN ratios and chondrite-normalized REE patterns reveal that barite in Farsesh deposit is enriched in LREEs compared with heavy rare Earth elements (HREEs). Similarity between Ce/La ratios in barite samples and those found in deep-sea barite supports its marine origin. Lanthanum and Gd exhibit positive anomalies, which are common features of chemical marine sediments. Cerium shows a negative anomaly in most samples inherited from the negative Ce anomaly of hydrothermal fluid that is mixed with seawater at barite precipitation. The available data including tectonic setting, host rock characteristics, REE geochemistry, and sulfur isotopic compositions may support a hydrothermal submarine origin for Farsesh barite deposit.

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“…9A), namely (a) Bijgan in Iran (Ehya, 2012), (b) Karalar in Turkey (Bozkaya & Gökce, 2004;Gökce & Bozkaya, 2008), (c) Mt.Mulga in Australia (Griessmann et al, 2010), (e) Bouznika in Morocco (Jébrak et al, 2011), (f) Duboki Vagan in Bosnia (Jurković et al, 2011), and in the southern California continental borderland (SCCB) (Hein et al, 2007). The geology, environment, tectonic setting and genesis of these deposits are summarised in Table 3.…”

Section: Comparison Of the Farsesh Barite Deposit With Other Barite Omentioning

confidence: 99%

“…The positive Eu anomalies and REE patterns of these barite deposits point at an exhalative hydrothermal origin (Barret et al, 1990). The low Ce/La ratios of the barites from the Bijgan (Ehya, 2012), Bouznika (Jébrak et al, 2011) and Duboki Vagan (Jurković et al, 2011) deposits show that these deposits are marine (Ce/La<1), similar to the Farsesh deposit, whereas the high Ce/La ratios of barite from the Mt.Mulga (Griessmann et al, 2010), SCCB (Hein et al, 2007) and Karalar (Bozkaya & Gökce, 2004;Gökce & Bozkaya, 2008) deposits indicate that these barite deposits are terrestrial (Ce/La>1) (Guichard et al, 1979). Comparizon of the REE patterns of the Frasesh barite samples with the SCCB barite deposit (Hein (Guichard et al, 1979) (Fig.…”

Section: Comparison Of the Farsesh Barite Deposit With Other Barite Omentioning

confidence: 99%

Geochemistry and Fuid-Inclusion Microthermometry of the Farsesh Barite Deposit, Iran

et al. 2014

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The Permian carbonate-hosted Farsesh barite deposit is located southeast of the City of Aligudarz in the province of Lorestan, Iran. Structurally, this deposit lies in the Zagros metallogenic belt and the Sanandaj-Sirjan Zone. Barite mineralisations occur as open-space flling veins, and as massive and replacement ores along fractures, faults and shear zones of the Permian carbonate host rocks. In order to determine the structure, in addition to pe-trographic and fuid-inclusions studies, an ICP-MS analysis was carried out in order to measure the major as well as the trace and rare earth elements. The Farsesh barite deposit has a simple mineralogy, of which barite is the main mineral, followed by calcite, dolomite, quartz, and opaque minerals such as Fe-oxides. Replacement of bar-ite by calcite is common and is more frequent than space-flling mineralisation. Sulphide minerals are minor and mainly consist of chalcopyrite and pyrite, which are altered by weathering to covellite, malachite and azurite. Petrographic analysis and micro-thermometry were carried out on the two-phase liquid/vapour inclusions in ellipsoidal or irregularly shaped minerals ranging in size from 5–10 µm. The measurements were conducted on fuid inclusions during the heating and subsequent homogenisation in the liquid phase. The low homogenisation temperatures (200–125°C) and low to moderate salinity (4.2–20 eq wt% NaCl) indicate that the barite had precipitated from hydrothermal basinal water with low to moderate salinity. It appears from the major and trace elements that geochemical features such as Ba and Sr enrichment in the barite samples was accompanied by depletion of Pb, Zn, Hg, Cu and Sb. The geochemistry of the rare earth elements, such as low σREE concentrations, LREE-enrichment chondrite-normalised REE patterns, the negative Ce and positive Eu anomalies, the low Ce/La ratio and the positive La and Gd anomalies, suggest that the Farsesh barite was deposited from hydrothermally infuenced sea water. The Farsesh deposit contains low-temperature hydrothermal barite. The scatter plots of the barite (close to sea water) in different areas on the CeN/SmN versus CeN/YbN diagram support the possibility that the barite was formed from seawater-bearing hydrothermal fuids.

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Geochemical characteristics of mercurian tetrahedrite, barite and fluorite from the Duboki Vagan, Glumac and Dubrave-Dugi Dol barite deposits, south of Kreševo, Mid-Bosnian Schist Mts.

Cited by 10 publications

References 14 publications

Minor and Trace Elements in Natural Tetrahedrite-Tennantite: Effects on Element Partitioning among Base Metal Sulphides

Minor and Trace Elements in Natural Tetrahedrite-Tennantite: Effects on Element Partitioning among Base Metal Sulphides

Geology, geochemistry, sulfur isotope composition, and fluid inclusion data of Farsesh barite deposit, Lorestan Province, Iran

Geochemistry and Fuid-Inclusion Microthermometry of the Farsesh Barite Deposit, Iran

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