Zr/Hf ratio as an indicator of fractionation of rare-metal granites by the example of the Kukulbei complex, eastern Transbaikalia

Zaraisky, G. P.; Aksyuk, A. M.; Devyatova, V. N.; Удоратина, О. В.; Chevychelov, V. Yu.

doi:10.1134/s0869591108070047

Cited by 37 publications

(11 citation statements)

References 4 publications

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“…The ratio of Zr to other metals like Hf or Ti is highly useful to determine the crystallization sequences of rocks (Zaraisky et al 2009 ) . Therefore, Zr/Hf and Ti/Zr concentration ratios are employed to trace possible precursor rock(s) that exist in ores (Kurtz et al 2000 ;Zaraisky et al 2008Zaraisky et al , 2009Hao et al 2010 ;Bern et al 2011 ) . The ratios of immobile elements (e.g., Ti/Zr) in bauxite are similar to those of the parent rock (Valeton et al 1987 ) and can be used to determine source rocks (Calagari and Abedini 2007 ) .…”

Section: Retention Mobility and Bioavailability Of Zr In Soilsmentioning

confidence: 99%

Behavior and Impact of Zirconium in the Soil–Plant System: Plant Uptake and Phytotoxicity

Shahid

Ferrand

Schreck

et al. 2012

Reviews of Environmental Contamination and Toxicology Volume 221

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Zirconium (Zr) is a transition metal that has both stable and radioactive isotopes.This metal has gained significant attention as a major pollutant of concern, partly because it has been prominent in the debate concerning the growing anthropogenic pressure on the environment. Its numerous past and present uses have induced significant soil and water pollution. Zr is generally considered to have low mobility in soils. The behavior of Zr particularly depends on the characteristics of the media in which it exists, and even its presence in the biosphere as a contaminate may affect its behavior. In this chapter, we describe the relationship between the behavior of Zrand its speciation in soils, its uptake and accumulation by plants, its translocation and toxicity inside plants, and mechanisms by which plants detoxify it.Zr is abundant and occurs naturally in the earth's crust. Zr emissions to the atmosphere are increasing from anthropogenic activities such as its use in industry and nuclear reactors. Zr forms various complexes with soil components, which reduces its soil mobility and phytoavailabilty. The mobility and phytoavailabilty of Zr in soil depend on its speciation and the physicochemical properties of soil that include soil pH, texture, and organic contents. Despite having low soil mobility and phytoavailability,amounts of Zr are absorbed by plants, mainly through the root system and can thereby enter the food chain.After plant uptake, Zr mainly accumulates in root cells. Zr does not have any known essential function in plant or animal metabolism. Although little published data are available, we conclude that the phytotoxicity of Zr is generally low.Notwithstanding, Zr can significantly reduce plant growth and can affect plantenzyme activity. When exposed to Zr-induced toxicity, plants possess numerous defense mechanisms to cope with the toxicity. Such strategies include Zr sequestration in plant roots and activation of various antioxidants. Because Zr may have impact on the biosphere, we believe it deserves to be evaluated in supplementary studies that will enhance the understanding of its behavior in soil-plant systems.

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Section: Retention Mobility and Bioavailability Of Zr In Soilsmentioning

confidence: 99%

Behavior and Impact of Zirconium in the Soil–Plant System: Plant Uptake and Phytotoxicity

Shahid

Ferrand

Schreck

et al. 2012

Reviews of Environmental Contamination and Toxicology Volume 221

View full text Add to dashboard Cite

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“…It has been suggested that magma differentiation is insufficient for generating economic Ta and Nb deposits, and that post-magmatic hydrothermal processes play a key role in the redeposition of columbite-group minerals (Chevychelov et al, 2005;Zaraisky et al, 2006Zaraisky et al, , 2008. Remarkable lanthanide tetrad effect shown in the REE patterns of the Yashan Li-mica granite and topaz-lepidolite granite (Fig.…”

Section: Behaviors Of Ta and Nb During Hydrothermal Evolutionmentioning

confidence: 99%

“…9; Table 3). This is because Ta cannot be effectively dissolved and transported by an aqueous fluid (Chevychelov et al, 2005;Cuney et al, 1992), but W can be easily transported from granite melt into a hydrothermal fluid to produce hydrothermal-metasomatic greisen deposit (Zaraisky et al, 2008). Evidently, the patchy zoned columbite-tantalite has much higher Fe, Ti and W than the normal zoned tabular crystals (Huang et al, 2002).…”

Section: Behaviors Of Ta and Nb During Hydrothermal Evolutionmentioning

confidence: 99%

“…The rare-metal granites commonly display extreme diversity of W and Nb-Ta mineralizations (e.g., Huang et al, 2002;Lenharo et al, 2003;Lichtervelde et al, 2008;Linnen, 1998;Rasmussen et al, 2011;Wang et al, 2004;Yin et al, 1995;Zaraisky et al, 2008;Zhang et al, 2006). In South China, except for rare Ta-Nb mineralization, widespread W mineralization in the Xihuashan, Dajishan, Dengfuxian and Yaogangxian granites (Fig.…”

Section: Behaviors Of Ta and Nb During Hydrothermal Evolutionmentioning

confidence: 99%

“…For example, many highly fractionated peraluminous granites or granitic pegmatites are characterized by extremely low Zr/Hf and the occurrence of hafnium-rich zircons (e.g., Černý and Siivola, 1980;Raimbault et al, 1995;Wang et al, 1996). Thus Zr/Hf ratio may serve as a useful index of the extent of fractional crystallization of a felsic melt (Linnen, 1998;Linnen and Keppler, 2002;Zaraisky et al, 2008). Nb/Ta ratio decreases in the residual liquids of metaluminous and peraluminous granitic melts during fractional crystallization (Linnen, 1998;Linnen and Keppler, 1997).…”

Section: Magmatic Evolution In the Yashan Plutonmentioning

confidence: 99%

See 2 more Smart Citations

In situ analyses of micas in the Yashan granite, South China: Constraints on magmatic and hydrothermal evolutions of W and Ta–Nb bearing granites

Huang

et al. 2015

Ore Geology Reviews

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Petrogenesis and mineralization potential of Bhilangana granitoid, Bhilangana Valley, Garhwal Himalaya, India

Chauhan,

Shankar,

Chauhan

et al. 2024

J Earth Syst Sci

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Zr/Hf ratio as an indicator of fractionation of rare-metal granites by the example of the Kukulbei complex, eastern Transbaikalia

Cited by 37 publications

References 4 publications

Behavior and Impact of Zirconium in the Soil–Plant System: Plant Uptake and Phytotoxicity

Behavior and Impact of Zirconium in the Soil–Plant System: Plant Uptake and Phytotoxicity

In situ analyses of micas in the Yashan granite, South China: Constraints on magmatic and hydrothermal evolutions of W and Ta–Nb bearing granites

Petrogenesis and mineralization potential of Bhilangana granitoid, Bhilangana Valley, Garhwal Himalaya, India

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