RECOGNITION OF ORIGINAL CARBONATE MINERALOGY AND DETERMINATION OF ORE GENESIS IN ROBAT MINE (KHOMEIN-ARAK) CARBONATES

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ADAABI M.H.; JAMALIAN M.

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Journal: GEOSCIENCES Year:2008 | Volume:17 | Issue:66 Page(s): 2-23

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Title

RECOGNITION OF ORIGINAL CARBONATE MINERALOGY AND DETERMINATION OF ORE GENESIS IN ROBAT MINE (KHOMEIN-ARAK) CARBONATES

Author(s)

ADAABI M.H. | JAMALIAN M. | Issue Writer Certificate

Keywords

ORIGINAL MINERALOGYQ3

ORE GENESISQ3

ROBAT MINEQ3

CARBON AND OXYGEN ISOTOPESQ3

Abstract

The studied area is located at the middle structural zone of Sanandaj-Sirjanin Malayer Esfahan axis. Lower Cretaceous sequence disconformably overlay the Triassic-Jurassic sequences. The sediments have been folded during Middle Cimerian (Bajocian-Batonian) and Laramian (Upper Cretaceous) orogenic phases. The carbonate sequences are the host rock of Pb and Zn mineralization in Robat area.The true thickness of the sequence in south and north slopes of Aregijeh Mountain are 256m and 230m respectively and in the south slope of BarAftab Mountain is 408 m. Major and trace elements such as Ca, Mg, Sr, Na, Fe, Mn, Sr/Na, Sr/Mn, Sr/Ca and d8O and d13C isotope values in carbonates are used for recognition of ORIGINAL MINERALOGY. Trace elements and oxygen and carbon isotopes indicate a mixed calcite-aragonite ORIGINAL MINERALOGY.Petrographic and geochemical studies indicate that carbonates affected mostly by meteoric diagenesis in an open system. Paleotemperature calculation, based on lightest oxygen value, indicates that the diagenetic temperature was about 75oc.The genetic types of ore deposits in Robat area is a kind of diagenetic-epigenetic forms, controlled by hydrothermal fluids at low temperature, similar to the Mississippi Valley Type deposits (MVT). The model of ore formation is illustrated below: The passage of meteoric waters through fractures and faults removed Pb, Zn and Mg from shale layers and precipitated the elements in the limestone rocks. The shale layers above the limestone sequences played as a feeder trap for lead and zinc deposits. Siliceous (jasperoid) and dolomitic alteration are the main alterations in the area.

Cites

THE EMARAT AND MUCHAN SEDIMENTARY ROCK-HOSTED STRATA BOUND ZN-PB DEPOSITS: NEW DATA AND GENETIC IMPLICATIONS

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APA: Copy

ADAABI, M.H., & JAMALIAN, M.. (2008). RECOGNITION OF ORIGINAL CARBONATE MINERALOGY AND DETERMINATION OF ORE GENESIS IN ROBAT MINE (KHOMEIN-ARAK) CARBONATES. GEOSCIENCES, 17(66), 2-23. SID. https://sid.ir/paper/31823/en

Vancouver: Copy

ADAABI M.H., JAMALIAN M.. RECOGNITION OF ORIGINAL CARBONATE MINERALOGY AND DETERMINATION OF ORE GENESIS IN ROBAT MINE (KHOMEIN-ARAK) CARBONATES. GEOSCIENCES[Internet]. 2008;17(66):2-23. Available from: https://sid.ir/paper/31823/en

IEEE: Copy

M.H. ADAABI, and M. JAMALIAN, “RECOGNITION OF ORIGINAL CARBONATE MINERALOGY AND DETERMINATION OF ORE GENESIS IN ROBAT MINE (KHOMEIN-ARAK) CARBONATES,” GEOSCIENCES, vol. 17, no. 66, pp. 2–23, 2008, [Online]. Available: https://sid.ir/paper/31823/en

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