ALTERATION AND MINERALIZATION IN KALKAFI GRANITOID INTRUSIVE BODY, NORTHEAST OF ANARAK

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MOGHADDASI S.J.; NAMDAR MOHAMMADI T.; AHMADIAN J.

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Journal: Iranian Journal of Geology Year:2012 | Volume:6 | Issue:21 Page(s): 15-23

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Title

ALTERATION AND MINERALIZATION IN KALKAFI GRANITOID INTRUSIVE BODY, NORTHEAST OF ANARAK

Author(s)

MOGHADDASI S.J. | NAMDAR MOHAMMADI T. | AHMADIAN J. | Issue Writer Certificate

Keywords

ALTERATIONQ2

MINERALIZATIONQ2

RARE EARTH ELEMENTSQ1

FLUID INCLUSIONQ1

KALKAFIQ2

Abstract

Kalkafi area is located about 76 km northeast of Anarak (Isfahan Province), in Central Iran structural zone. Based on field observations, petro graphical and XRD examinations, three major ALTERATION zones were identified in the studied area including potassic, phyllic-argillic, and silicic zones. Potassic ALTERATION is characterized by orthoclase+biotite+quartz ±sericite assemblage. Phyllic ALTERATION is composed of sericite+quartz+pyrite associated with clay minerals±calcite, and argillic ALTERATION is characterized by kaolinite+dikite+sericite+quartz+hematite+limonite+goethite. Two major ore MINERALIZATIONs were identified in the studied area: (1) Cu-Mo MINERALIZATION and (2) Au-Pb-Zn polymetallic MINERALIZATION. Cu-Mo MINERALIZATION is mainly related to porphyry quartz monzonites and granites. Chondrite normalized REE patterns of unaltered intrusive bodies (quartz monzonites) indicate a strong LREE and a weak HREE differentiations. Lower content of total REEs in the altered samples of the studied area indicates their mobility in hydrothermal environment. Microthermometric analysis offluid inclusions of the studied samples indicates that salinity of mineralizing fluid ranges from 1.74 to 21.11 NaCl equivalent wt%. Collected homogenization temperatures confirm the existence of at least two generations of FLUID INCLUSIONs or mineralizing fluids in this area.

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APA: Copy

MOGHADDASI, S.J., NAMDAR MOHAMMADI, T., & AHMADIAN, J.. (2012). ALTERATION AND MINERALIZATION IN KALKAFI GRANITOID INTRUSIVE BODY, NORTHEAST OF ANARAK. IRANIAN JOURNAL OF GEOLOGY, 6(21), 15-23. SID. https://sid.ir/paper/129399/en

Vancouver: Copy

MOGHADDASI S.J., NAMDAR MOHAMMADI T., AHMADIAN J.. ALTERATION AND MINERALIZATION IN KALKAFI GRANITOID INTRUSIVE BODY, NORTHEAST OF ANARAK. IRANIAN JOURNAL OF GEOLOGY[Internet]. 2012;6(21):15-23. Available from: https://sid.ir/paper/129399/en

IEEE: Copy

S.J. MOGHADDASI, T. NAMDAR MOHAMMADI, and J. AHMADIAN, “ALTERATION AND MINERALIZATION IN KALKAFI GRANITOID INTRUSIVE BODY, NORTHEAST OF ANARAK,” IRANIAN JOURNAL OF GEOLOGY, vol. 6, no. 21, pp. 15–23, 2012, [Online]. Available: https://sid.ir/paper/129399/en

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