The Mt. Mulga barite–magnetite–copper–gold mineralisation, Olary Domain, South Australia

Griessmann, Martin; Mumm, Andreas Schmidt; Seifert, Thomas; Conor, Colin

doi:10.1016/j.gexplo.2009.11.008

Cited by 2 publications

(3 citation statements)

References 22 publications

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“…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: 92%

“…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%

“…Mulga (Griessmann et al, 2010) Table 2), normalised against the corresponding global average trace-element concentrations in limestones (Levinson, 1974). The global average Ga concentration is from Burton et al (1959).…”

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

confidence: 99%

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

confidence: 92%

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

confidence: 99%

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

et al. 2014

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Fluids in geological processes — The present state and future outlook

Mumm

Brugger

Zhao

et al. 2010

Journal of Geochemical Exploration

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The Mt. Mulga barite–magnetite–copper–gold mineralisation, Olary Domain, South Australia

Cited by 2 publications

References 22 publications

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

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

Fluids in geological processes — The present state and future outlook

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