GEOCHEMICAL BEHAVIOR OF RARE EARTH ELEMENTS IN GARNETS OF KHUT SKARN USING LASER ABLATION ICP-MS DATA, W YAZD, IRAN

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ZAHEDI A.; BOOMERI M.; MACKIZADEH M.A.

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Journal: GEOSCIENCES Year:2015 | Volume:24 | Issue:94 (PETROLOGY & MINERALOGY) Page(s): 263-276

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Title

GEOCHEMICAL BEHAVIOR OF RARE EARTH ELEMENTS IN GARNETS OF KHUT SKARN USING LASER ABLATION ICP-MS DATA, W YAZD, IRAN

Author(s)

ZAHEDI A. | BOOMERI M. | MACKIZADEH M.A. | Issue Writer Certificate

Keywords

GARNETQ2

REE GEOCHEMISTRYQ2

METASOMATISMQ2

SKARNQ2

KHUTQ2

Abstract

The GARNETs from the KHUTSkarn in the west of Yazd have been formed as a result of hydrothermal activity ofOligo-Miocene calc-alkaline plutons. The chemical composition of GARNETs in the KHUTskarn are divided into two solid solution of grossularitic-andraditic and almost pure andradite different types. The Fe-rich GARNETs are isotropic (Adr>96), whereasgrossularitic-andraditic GARNETs are anisotropic and show compositional zoning and sectorial twinning (Ad74.3Gr24.8-Ad32.1Gr66.6). The compositional zoning of anisotropic GARNETs may result from hydrothermal overgrowths on contact metamorphic minerals, variations in P, T, XCO2, concentrations of Fe3+ and Al, or kinetic factors. The Laser Ablation ICP-MS results show isotropic GARNETs exhibit LREE-enriched and HREE-depleted patterns, with a positive Eu anomaly. These GARNETs grow rapidly under relatively high W/R ratios from the magmatic-derived fluids during infiltration METASOMATISM process, whereas anisotropic GARNETs have much lower enrichment in LREE and show a weak negative Eu anomaly. These GARNETs formed by prolonged interaction of pore fluids with the host rocks during the diffusive METASOMATISM process.

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APA: Copy

ZAHEDI, A., BOOMERI, M., & MACKIZADEH, M.A.. (2015). GEOCHEMICAL BEHAVIOR OF RARE EARTH ELEMENTS IN GARNETS OF KHUT SKARN USING LASER ABLATION ICP-MS DATA, W YAZD, IRAN. GEOSCIENCES, 24(94 (PETROLOGY & MINERALOGY)), 263-276. SID. https://sid.ir/paper/31341/en

Vancouver: Copy

ZAHEDI A., BOOMERI M., MACKIZADEH M.A.. GEOCHEMICAL BEHAVIOR OF RARE EARTH ELEMENTS IN GARNETS OF KHUT SKARN USING LASER ABLATION ICP-MS DATA, W YAZD, IRAN. GEOSCIENCES[Internet]. 2015;24(94 (PETROLOGY & MINERALOGY)):263-276. Available from: https://sid.ir/paper/31341/en

IEEE: Copy

A. ZAHEDI, M. BOOMERI, and M.A. MACKIZADEH, “GEOCHEMICAL BEHAVIOR OF RARE EARTH ELEMENTS IN GARNETS OF KHUT SKARN USING LASER ABLATION ICP-MS DATA, W YAZD, IRAN,” GEOSCIENCES, vol. 24, no. 94 (PETROLOGY & MINERALOGY), pp. 263–276, 2015, [Online]. Available: https://sid.ir/paper/31341/en

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