SKARNS AND RELATED COPPER MINERALIZATION AT THE WESTERN SUNGUN PORPHYRY COPPER DEPOSIT, A THERMO-GEOCHEMICAL INVESTIGATION

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HEZARKHANI A.

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Journal: AMIRKABIR Year:2003 | Volume:14 | Issue:55-D Page(s): 179-193

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Title

SKARNS AND RELATED COPPER MINERALIZATION AT THE WESTERN SUNGUN PORPHYRY COPPER DEPOSIT, A THERMO-GEOCHEMICAL INVESTIGATION

Author(s)

HEZARKHANI A. | Issue Writer Certificate

Keywords

SUNGUN

THERMO-GEOCHEMISTRY

COPPER

SKARN

Abstract

Trace element geochemistry, mineral paragenesis, and fluid inclusion studies, have identified two stages of hydrothermal alteration and related mineralization within the SUNGUN SKARN. The first stage (stage I) was produced by the early pulses of Fe-rich magmatically derived fluids, which is coincident with potassic alteration at the main stock, and caused the formation of oscillatory zoned garnets, followed by pyroxene (diopside and hedenbergite) + wollastonite + magnetite and rare Mo at high temperatures (~450 oC). The second stage (II) occurred at lower temperature (~360 oC) when the system collapsea to cool down, and is characterised by tremolite-actinolite, epidote, quartz, calcite, apatite, titanite, hematite crystallization and COPPER deposition. It is concluded that the Cu mineralization was due to decreas off 01 and increase of pH in lower temperature range (400 DC) in last stage of alteration in the SUNGUN SKARN.In addition, the detailed mineralogical studies present that in the SUNGUN SKARNs, the garnet displays complex oscillatory zoning due to fluctuations in the Al+3/Fe+3 ratio and varies in composition from andradite 100 to andradite78-grossular22 Individual zones are typically composed either of near end-member andradite or andradite containing approximately 20 mole % grossular. The oscillation from andradite to less grossular-bearing zones is interpreted to reflect fluid and rock-dominated control of Fe+3and Al+3 activity, respectively, and batch-rise or episodic influx of fluid. Introduction of fresh batches of Fe-rich fluid caused crystallization of near end-member andradite garnet since the system was buffered by fluid.

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APA: Copy

HEZARKHANI, A.. (2003). SKARNS AND RELATED COPPER MINERALIZATION AT THE WESTERN SUNGUN PORPHYRY COPPER DEPOSIT, A THERMO-GEOCHEMICAL INVESTIGATION. AMIRKABIR, 14(55-D), 179-193. SID. https://sid.ir/paper/528693/en

Vancouver: Copy

HEZARKHANI A.. SKARNS AND RELATED COPPER MINERALIZATION AT THE WESTERN SUNGUN PORPHYRY COPPER DEPOSIT, A THERMO-GEOCHEMICAL INVESTIGATION. AMIRKABIR[Internet]. 2003;14(55-D):179-193. Available from: https://sid.ir/paper/528693/en

IEEE: Copy

A. HEZARKHANI, “SKARNS AND RELATED COPPER MINERALIZATION AT THE WESTERN SUNGUN PORPHYRY COPPER DEPOSIT, A THERMO-GEOCHEMICAL INVESTIGATION,” AMIRKABIR, vol. 14, no. 55-D, pp. 179–193, 2003, [Online]. Available: https://sid.ir/paper/528693/en

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