ALTERATION, MINERALIZATION AND GEOCHEMICAL EXPLORATION (STREAM SEDIMENT AND ROCK) OF EASTERN NAJMABAD, GHONABAD

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KARIMPOUR M.H.; MORADI NOGHONDAR M.

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Journal: Iranian Journal of Geology Year:2010 | Volume:4 | Issue:13 Page(s): 61-74

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Information Journal Paper

Title

ALTERATION, MINERALIZATION AND GEOCHEMICAL EXPLORATION (STREAM SEDIMENT AND ROCK) OF EASTERN NAJMABAD, GHONABAD

Author(s)

KARIMPOUR M.H. | MORADI NOGHONDAR M. | Issue Writer Certificate

Keywords

TINQ3

TUNGSTENQ3

GOLDQ2

ILMENITEQ3

MAGNETITE SERIESQ3

Abstract

The study area is located in eastern Iran, about 15 Km southeast of Gonabad. Low grade regional metamorphism (Jurassic-Cretaceous orogeny) has turned shale and sandstone of Jurassic into slate and quartzite. Slates are metamorphosed to different types of schist around the contact of granodiorite. Both magnetite and ILMENITE granitoids were identified. Biotite granodiorite batholith belongs to ILMENITE series. Monzonitic subvolcanic forms as stock and they are younger than granodiorite. Based on mineralogy and high values of magnetic susceptibility [(>500)×10-5 SI], the monzonite is classified as the magnetite-series of oxidant type granitoids (I-type granitoids). Alteration zones associated with granodiorite are: sericitic, propylitic, silicification, argillic and tourmalinization. Heavy minerals (stream sediment) originated from granodiorite of the eastern section shows anomalies of Sn, Au, As, Pb, Zn, Cu, W. The highest values of these elements are: Sn=445 ppm, Cu= 321 ppm, As=399 ppm, W=59 ppm, Pb=980 ppm, and Zn=608 ppm. Analytical results of 77 samples, taken from granodiorite and monzonite (altered and mineralized), show high anomalies of Sn, Cu, Au, Pb, Zn, W within granodiorite outcrop in the eastern section of the study area.

Cites

OVERVIEW OF THE GEOCHEMISTRY AND RB/SR, SM/ND ISOTOPES OF MIDDLE JURASSIC AND TERTIARY GRANITOID INTRUSIONS: A NEW INSIGHT ON TECTONO-MAGMATISM AND MINERALIZATION OF THIS PERIOD IN IRAN

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APA: Copy

KARIMPOUR, M.H., & MORADI NOGHONDAR, M.. (2010). ALTERATION, MINERALIZATION AND GEOCHEMICAL EXPLORATION (STREAM SEDIMENT AND ROCK) OF EASTERN NAJMABAD, GHONABAD. IRANIAN JOURNAL OF GEOLOGY, 4(13), 61-74. SID. https://sid.ir/paper/129295/en

Vancouver: Copy

KARIMPOUR M.H., MORADI NOGHONDAR M.. ALTERATION, MINERALIZATION AND GEOCHEMICAL EXPLORATION (STREAM SEDIMENT AND ROCK) OF EASTERN NAJMABAD, GHONABAD. IRANIAN JOURNAL OF GEOLOGY[Internet]. 2010;4(13):61-74. Available from: https://sid.ir/paper/129295/en

IEEE: Copy

M.H. KARIMPOUR, and M. MORADI NOGHONDAR, “ALTERATION, MINERALIZATION AND GEOCHEMICAL EXPLORATION (STREAM SEDIMENT AND ROCK) OF EASTERN NAJMABAD, GHONABAD,” IRANIAN JOURNAL OF GEOLOGY, vol. 4, no. 13, pp. 61–74, 2010, [Online]. Available: https://sid.ir/paper/129295/en

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