Formation and evolution of snowball quartz phenocrysts in the Dongping porphyritic granite, Hebei Province, China: Insights from fluid inclusions, cathodoluminescence, trace elements, and crystal size distribution study

Wang, Dazhao; Liu, Jiajun; Carranza, Emmanuel John M.; Zhai, Degao; Wang, Yin‐Hong; Zhen, Shimin; Wang, Jiang; Liu, Zhenjiang; Zhang, Fangfang

doi:10.1016/j.lithos.2019.05.018

Cited by 16 publications

(4 citation statements)

References 58 publications

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“…At the mesoscopic scale, we also find evidence of volatile phase saturation processes in the Iberian RMGs, such as the presence of greisen (Penouta, Golpejas), as well as pegmatites interbedded with aplites in the apical part of the granite (e.g., Penouta, [2]). Also at the microscopic scale, the presence of snowball quartz with plagioclase microinclusions has been associated with the presence of an exsolved fluid phase [145], which could have occurred in the Golpejas, Penouta, and Argemela RMGs.…”

Section: The Role Of Fluids In the Crystallization Of Iberian Rmgsmentioning

confidence: 99%

Peraluminous Rare Metal Granites in Iberia: Geochemical, Mineralogical, Geothermobarometric, and Petrogenetic Constraints

López-Moro,

Díez-Montes,

Timón-Sánchez

et al. 2024

Minerals

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The intensive variables, geochemical, mineralogical, and petrogenetic constraints of the Iberian peraluminous rare metal granites (RMGs), many of them unknown, are presented. The mineral chemistry of ore and gangue minerals, whole rock analyses, geothermobarometry, melt water and phosphorus contents, mass balance, and Rayleigh modeling were performed to achieve these objectives. These procedures allow us to distinguish two main contrasting granitic types: Nb-Ta-rich and Nb-Ta-poor granites. The former have lower crystallization temperatures, higher water contents, and lower emplacement pressures than Nb-Ta-poor granites. Nb-Ta-rich granites also have higher fluoride contents, strong fractionation into geochemical twins, higher Na contents, and different evolutionary trends. At the deposit scale, the fractional crystallization of micas properly explains the variation in the Ta/Nb ratio in both Nb-Ta-poor and Nb-Ta-rich RMGs, although in higher-grade granites, the variation is not as clear due to the action of fluids. Fluid phase separation processes especially occurred in the Nb-Ta rich granites, thus transporting halogens and metals that increased the grades in the top and sometimes in the core of granites. Gas-driven filter pressing processes facilitated the migration of fluid and melt near solidus melt in Nb-Ta-rich granites. The geochemical signature of the Iberian rare metal granites mainly follows the trends of two-mica granites and P-rich cordierite granites, but also of granodiorites.

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Section: The Role Of Fluids In the Crystallization Of Iberian Rmgsmentioning

confidence: 99%

Peraluminous Rare Metal Granites in Iberia: Geochemical, Mineralogical, Geothermobarometric, and Petrogenetic Constraints

López-Moro,

Díez-Montes,

Timón-Sánchez

et al. 2024

Minerals

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“…Therefore, combined CL and trace-element studies have significant potential for the reconstruction of crystallisation sequences in magmatic and hydrothermal systems (e.g. Kempe et al , 1999; Landtwing and Pettke, 2005; Müller et al , 2005, 2010; Jourdan et al , 2009; Götte et al , 2011; Audétat, 2013; Mao et al , 2017; Wertich et al , 2018; Wang et al , 2019; Luo et al , 2020; Lan et al , 2021).…”

Section: Geological Implications Of Quartz Propertiesmentioning

confidence: 99%

Mineralogy and mineral chemistry of quartz: A review

Götze

Pan

Müller

2021

MinMag

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“…Reports in the literature differ on the question of whether such snowball texture is magmatic (Pollard, 1989;Schwartz, 1992;Helba et al, 1997) or metasomatic (Beus, 1982) in origin. Recently, Wang et al (2019) concluded that snowball quartz phenocrysts crystallize in fluid-enriched magma, where magmatic flow led to mineral rotation and rounded to sub-rounded quartz grains. K-feldspars are mainly orthoclase with minor microcline.…”

Section: Petrographymentioning

confidence: 99%

Magmatic and hydrothermal evolution of highly-fractionated rare-metal granites at Gabal Nuweibi, Eastern Desert, Egypt

Moussa

Asimow

Azer

et al. 2021

Lithos

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This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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Formation and evolution of snowball quartz phenocrysts in the Dongping porphyritic granite, Hebei Province, China: Insights from fluid inclusions, cathodoluminescence, trace elements, and crystal size distribution study

Cited by 16 publications

References 58 publications

Peraluminous Rare Metal Granites in Iberia: Geochemical, Mineralogical, Geothermobarometric, and Petrogenetic Constraints

Peraluminous Rare Metal Granites in Iberia: Geochemical, Mineralogical, Geothermobarometric, and Petrogenetic Constraints

Mineralogy and mineral chemistry of quartz: A review

Magmatic and hydrothermal evolution of highly-fractionated rare-metal granites at Gabal Nuweibi, Eastern Desert, Egypt

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