Origin of ore fluids in the Muruntau gold system: Constraints from noble gas, carbon isotope and halogen data

Graupner, Torsten; Niedermann, Samuel; Kempe, Ulf; Klemd, Reiner; Bechtel, Achim

doi:10.1016/j.gca.2006.08.013

Cited by 74 publications

(42 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Noble gas data from many mineral deposits around the world indicate at least some incorporation of mantle-derived helium in the mineralising systems (Stuart et al 1995;Burnard et al 1999;Mao et al 2003;Hu et al 2004;Graupner et al 2006). The exact role of this fluid component in the mineralising systems is not known, but its presence is commonly indicative of a magmatic input (Kendrick et al 2001;Burnard and Polya 2004;Graupner et al 2006 He of 0.5-2 Ra ( Fig.…”

Section: Discussionmentioning

confidence: 99%

“…For this reason, noble gases are becoming an important research tool in deducing fluid sources because of their relatively unreactive nature in the geochemical environment (Turner et al 1993;Ballentine et al 2002;Kennedy et al 2002;Kendrick et al 2007;Fairmaid et al 2011). In particular, noble gases can retain evidence of mantle and associated magmatic source regions despite extensive fluid mobility through crustal rocks (Mao et al 2003;Burnard and Polya 2004;Hu et al 2004;Graupner et al 2006). In this study, we use noble gas contents of fluid inclusions to provide information on fluid sources and indications of potential fluid mixing along the fluid pathways.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Noble gases fingerprint a metasedimentary fluid source in the Macraes orogenic gold deposit, New Zealand

et al. 2016

View full text Add to dashboard Cite

Ar ratios up to 200 times greater than air. Similarly, I/Cl ratios for fluids extracted from mineralised quartz are similar to those of brines from marine sediments that have interacted with organic matter and are ten times higher than typical magmatic/mantle fluids. The Macraes mineralising fluids were compositionally variable, reflecting either mixing of two different crustal fluids in the metasedimentary pile or a single fluid type that has had varying degrees of interaction with the host metasediments. Evidence for additional input of meteoric water is equivocal, but minor meteoric incursion cannot be discounted. The Macraes deposit formed in a metasedimentary belt without associated coeval magmatism, and therefore represents a purely crustal metamorphogenic end member in a spectrum of orogenic hydrothermal processes that can include magmatic and/or mantle fluid input elsewhere in the world. There is no evidence for involvement of minor intercalated metabasic rocks in the Macraes mineralising system. Hydrothermal fluids that formed other, smaller, orogenic deposits in the same metamorphic belt have less pronounced noble gas and halogen evidence for crustal fluid-rock interaction than at Macraes, but these deposits also formed from broadly similar metamorphogenic processes.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Noble gases fingerprint a metasedimentary fluid source in the Macraes orogenic gold deposit, New Zealand

et al. 2016

View full text Add to dashboard Cite

show abstract

“…The samples from Yaoling deposit were recovered from underground ore vein Nos. 19,21, and 63 at the 450 m level. The samples from Meiziwo were recovered from ore vein Nos.…”

Section: Sample Descriptions and Analytical Methodsmentioning

confidence: 97%

“…Given that the Th/U ratio in samples is the crustal average (Th/U=3.6) [50], then the metallogenic age is 149 Ma, according to the in situ radiogenic 4 He production ratio ( 4 He atoms/g a = (3.115× 10 6 +1. [3,21,30,53,54]. It therefore seems likely that the analyses in Table 2 have been affected by the contribution of in situ produced radiogenic 4 He after trapping, and represent the minimum 3 He/ 4 He ratios from the time of mineral formation.…”

Section: Noble Gases In Minerals and Post Entrapment Modificationsmentioning

confidence: 99%

See 1 more Smart Citation

He-Ar isotope geochemistry of the Yaoling-Meiziwo tungsten deposit, North Guangdong Province: Constraints on Yanshanian crust-mantle interaction and metallogenesis in SE China

Zhai

Sun

et al. 2012

Chin. Sci. Bull.

View full text Add to dashboard Cite

With the development of noble gas isotopic geochemistry, a tracing system for noble gas isotopes has gradually been applied to studies of ore fluid origins . As a result, in many metal deposits, mantle-derived He was discovered in ore fluids [1][2][3][4][5][7][8][9][10]12,[15][16][17][18][19][20][21][22][23][25][26][27][28][29]. Mantle He in crustal rocks is intimately related to crust-mantle interaction, and the formation and evolution of mantle magma. Mantle magma not only provides ore fluid for metallogenesis, but also provides heat for the hydrothermal circulation that results in mineralization. Southeastern China is an important area of tungsten and tin metallogenesis, both regionally and globally, with many large, supergiant deposits, such as the Xihuangshan, Dajishan, and Piaotang tungsten deposits in Jiangxi province, the Jubankeng and Yaoling-Meiziwo

show abstract

Gold‐copper deposits in Wushitala, Southern Tianshan, Northwest China: Application of ASTER data for mineral exploration

Liu

Zhou

et al. 2017

Geological Journal

View full text Add to dashboard Cite

The Southern Tianshan area is one of the most important gold belts identified by many world‐class, super large and large gold deposits such as Muruntau (Uzbekistan), Kumtor (Kyrgyzstan), and Jilau (Tajikistan). Some medium‐ to small‐scale gold deposits, such as Sawayaerdun and Bulong, have been discovered and reported in recent years at the China part of the belt. The study area, named the Wushitala area, is located in the eastern part of Southern Tianshan, and it has a strong potential for gold and other metallic mineral deposits. This study utilizes various image processing techniques, including false colour composite, band ratios, and matched filtering, to process Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) data and map the distribution of hydrothermal minerals (e.g., muscovite, kaolinite, chlorite, epidote, goethite, and malachite) related to the known deposits in the Wushitala area. The identified alteration zones are coincident with the known gold and copper deposits and field samples from the study area. The distribution of the alteration zones also indicates that the acid intrusions and regional structures play an important role in focusing the mineralizing fluids. The results show that ASTER data accompanied with image processing methods and reference spectra (e.g., JPL, lab, or field measured) could be an effective technique for mapping hydrothermal alteration zones in areas with no dominant vegetation cover. Due to the extensively distributed acid intrusions and structures along the Southern Tianshan Belt, the mineral prospecting methodology is suggested for application in similar geological settings in the belt.

show abstract

Origin of ore fluids in the Muruntau gold system: Constraints from noble gas, carbon isotope and halogen data

Cited by 74 publications

References 42 publications

Noble gases fingerprint a metasedimentary fluid source in the Macraes orogenic gold deposit, New Zealand

Noble gases fingerprint a metasedimentary fluid source in the Macraes orogenic gold deposit, New Zealand

He-Ar isotope geochemistry of the Yaoling-Meiziwo tungsten deposit, North Guangdong Province: Constraints on Yanshanian crust-mantle interaction and metallogenesis in SE China

Gold‐copper deposits in Wushitala, Southern Tianshan, Northwest China: Application of ASTER data for mineral exploration

Contact Info

Product

Resources

About