RHENIUM DISTRIBUTION AND ITS CONTROLLING FACTORS IN MOLYBDENITE TYPES OF KERMAN PORPHYRY COPPER DEPOSITS

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LALI FAZ S.; SHAFIEI B.; SHAMANIAN GH.H.; TAGHIZADEH H.; HOSSAINI M.; MATHUR R.

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Journal: GEOSCIENCES Year:2013 | Volume:22 | Issue:86 Page(s): 143-154

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Title

RHENIUM DISTRIBUTION AND ITS CONTROLLING FACTORS IN MOLYBDENITE TYPES OF KERMAN PORPHYRY COPPER DEPOSITS

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Keywords

RHENIUMQ2

MOLYBDENITEQ2

CU PORPHYRYQ2

KERMANQ2

Abstract

In present study, Re concentration determined in 30 hexagonal (2H) and trigonal (3R) MOLYBDENITE samples belong to veinlets of different stages of hypogene mineralization from 7 porphyry Cu and Mo deposits from KERMAN region. Re concentration in MOLYBDENITEs of these ore deposits varied from 49 g/t to 1449 g/t which are in Re concentration range of other porphyry Cu and Mo deposits around the world. In general, 3R MOLYBDENITEs show the higher Re concentration (average~563 g/t) than those of 2H MOLYBDENITEs (average~479 g/t). Variations of Re concentration in MOLYBDENITE types deposited during different stages of hypogene mineralization indicate more concentration of Re in MOLYBDENITEs precipitated with transitional (B-type veins) and late (D-type veins) stages of mineralization than those of early stage veinlets (A-type veins). This distribution suggest that Re with more acidic and cooler hydrothermal fluids at the transitional and the late stages of porphyry system evolution is more concentrated with silicification, sericitization, and argillization alterations. Present study indicated that MOLYBDENITEs with high Re content are associated with porphyry copper deposits which are characterized by low average grade of Mo, limited contents of MOLYBDENITE, and also their productive intrusive is resulted from significant contribution of mantle-derived magmas respect to crustal materials. In addition to abovementioned signatures, frequency of 3R poly-type of MOLYBDENITE in ore deposits, less fractionated and more calcic composition of productive intrusive of ore deposits with their less radiogenic of Sr and Pb isotope ratios, as well as occurrence of late stages of acidic and low temperature hydrothermal alteration and mineralization processes in formation and evolution history of ore deposits are signatures of porphyry copper and molybdenum deposits with high Re contents.

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APA: Copy

LALI FAZ, S., SHAFIEI, B., SHAMANIAN, GH.H., TAGHIZADEH, H., HOSSAINI, M., & MATHUR, R.. (2013). RHENIUM DISTRIBUTION AND ITS CONTROLLING FACTORS IN MOLYBDENITE TYPES OF KERMAN PORPHYRY COPPER DEPOSITS. GEOSCIENCES, 22(86), 143-154. SID. https://sid.ir/paper/32039/en

Vancouver: Copy

LALI FAZ S., SHAFIEI B., SHAMANIAN GH.H., TAGHIZADEH H., HOSSAINI M., MATHUR R.. RHENIUM DISTRIBUTION AND ITS CONTROLLING FACTORS IN MOLYBDENITE TYPES OF KERMAN PORPHYRY COPPER DEPOSITS. GEOSCIENCES[Internet]. 2013;22(86):143-154. Available from: https://sid.ir/paper/32039/en

IEEE: Copy

S. LALI FAZ, B. SHAFIEI, GH.H. SHAMANIAN, H. TAGHIZADEH, M. HOSSAINI, and R. MATHUR, “RHENIUM DISTRIBUTION AND ITS CONTROLLING FACTORS IN MOLYBDENITE TYPES OF KERMAN PORPHYRY COPPER DEPOSITS,” GEOSCIENCES, vol. 22, no. 86, pp. 143–154, 2013, [Online]. Available: https://sid.ir/paper/32039/en

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