Ga-(Nb+Ta)-(Nb/Ta)(Zr/Hf) Ternary Diagram: An Excellent Tool for Discriminating Barren and Ta-Hosting Granite-Pegmatite Systems

Maryam Mohamadizadeh; Seyed Hossein Mojtahedzadeh; Farimah Ayati

doi:10.1007/s12583-020-1302-1

Volume 31 Issue 3

Jul 2020

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Journal of Earth Science > 2020 > 31(3): 551-558.

Maryam Mohamadizadeh, Seyed Hossein Mojtahedzadeh, Farimah Ayati. Ga-(Nb+Ta)-(Nb/Ta)(Zr/Hf) Ternary Diagram: An Excellent Tool for Discriminating Barren and Ta-Hosting Granite-Pegmatite Systems. Journal of Earth Science, 2020, 31(3): 551-558. doi: 10.1007/s12583-020-1302-1

Citation:

Maryam Mohamadizadeh, Seyed Hossein Mojtahedzadeh, Farimah Ayati. Ga-(Nb+Ta)-(Nb/Ta)(Zr/Hf) Ternary Diagram: An Excellent Tool for Discriminating Barren and Ta-Hosting Granite-Pegmatite Systems. Journal of Earth Science, 2020, 31(3): 551-558. doi: 10.1007/s12583-020-1302-1

Citation:

Maryam Mohamadizadeh, Seyed Hossein Mojtahedzadeh, Farimah Ayati. Ga-(Nb+Ta)-(Nb/Ta)(Zr/Hf) Ternary Diagram: An Excellent Tool for Discriminating Barren and Ta-Hosting Granite-Pegmatite Systems. Journal of Earth Science, 2020, 31(3): 551-558. doi: 10.1007/s12583-020-1302-1

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Ga-(Nb+Ta)-(Nb/Ta)(Zr/Hf) Ternary Diagram: An Excellent Tool for Discriminating Barren and Ta-Hosting Granite-Pegmatite Systems

doi: 10.1007/s12583-020-1302-1

1.
Mining and Metallurgical Engineering Department, Yazd University, Yazd 98195-741, Iran
2.
Department of Geology, Payame Noor University, 19395-4697 Tehran, Iran

More Information

Corresponding author: Seyed Hossein Mojtahedzadeh, ORCID:0000-0002-8035-3396, shmojtahed@gmail.com
Received Date: 23 Oct 2019
Accepted Date: 15 Feb 2020
Publish Date: 01 Mar 2020

Abstract

Abstract

Discriminating barren and fertile intrusions is one of the main challenges in the search for rare-element pegmatites. Diagrams comprising more than one element can make discrimination of productive and barren samples more valid. These diagrams distinguish samples by simultaneous means of positive and/or negative correlations between variables. A ternary diagram for S-type peraluminous granites has been obtained in this study. Firstly, a database composed of Ta-bearing and barren granitic systems was created, then geochemical behavior of trace elements was studied, and statistical investigations were done using GCDkit software, which resulted in the Ga-(Nb+Ta)-(Nb/Ta)(Zr/Hf) ternary diagram which can distinguish the non-mineralized granites from productive ones. The Ta-bearing samples, which are situated in the fertile field in the diagram, are those which have high Nb and Ta contents, elevated Ga content and the lowest Nb/Ta and Zr/Hf values.
- tantalum mineralization,
- S-type peraluminous granite,
- discrimination of fertile and barren granites,
- whole-rock geochemistry,
- indicators

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References(46)

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