RARE EARTH ELEMENT STUDY ON SCHEELITES FROM TUNGSTEN DEPOSITS IN SOUTHWEST OF ASTANEH, ARAK, IRAN

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GHADERI M.; FARDIN DOUST Z.; HERRIN J.

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Journal: Iranian Journal of Crystallography and Mineralogy Year:2005 | Volume:13 | Issue:1 Page(s): 29-42

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Title

RARE EARTH ELEMENT STUDY ON SCHEELITES FROM TUNGSTEN DEPOSITS IN SOUTHWEST OF ASTANEH, ARAK, IRAN

Author(s)

GHADERI M. | FARDIN DOUST Z. | HERRIN J. | Issue Writer Certificate

Keywords

RARE EARTH ELEMENTSQ2

SCHEELITEQ4

STRATABOUNDQ3

QUARTZ-TOURMALINE VEINQ4

ARAKQ2

IRANQ2

Abstract

Two types of tungsten mineralization have been recognized in southwest of Astaneh: 1. STRATABOUND type at Bamsar with calcareous schists and siliceous tuffs as host rocks, 2. QUARTZ-TOURMALINE VEIN type at Nezamabad, Revesht and Fizaneh hosted in quartzdiorite-granodiorite intrusions. SCHEELITE is the main tungsten ore mineral in both types. Generally, two distinct REEN patterns are observed in the SCHEELITEs from the region: Nezamabad, Revesht and Fizaneh patterns have a convex feature varying from Eu-free to highly negative Eu anomaly, having high Na and SREE contents. The samples are enriched in HREE. Bamsar type REEN pattern has lower SREE and Na, a relatively flat feature and small to large positive Eu anomalies. The samples are enriched in LREE. According to the REE trends, presence of high-temperature minerals, exsolution textures, presence of organic and graphitic parts, the two types of mineralization share a high temperature and reducing environment, but some differences lie in REE controlling processes. Surface absorption at Bamsar and mixing of complexes mechanism at Nezamabad, Revesht and Fizaneh control the REE patterns. Therefore, it can be concluded that the origin of REE in SCHEELITEs in the mineralized areas of Bamsar, Nezamabad, Revesht and Fizaneh share the same source and the differences in SREE result from the influence of host rocks in the areas with vein-type mineralization.

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تکامل تکتونیکی پهنه سنندج - سیرجان در نیمه شمال باختری و معرفی زیرپهنه های جدید در آن

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APA: Copy

GHADERI, M., FARDIN DOUST, Z., & HERRIN, J.. (2005). RARE EARTH ELEMENT STUDY ON SCHEELITES FROM TUNGSTEN DEPOSITS IN SOUTHWEST OF ASTANEH, ARAK, IRAN. IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY, 13(1), 29-42. SID. https://sid.ir/paper/3781/en

Vancouver: Copy

GHADERI M., FARDIN DOUST Z., HERRIN J.. RARE EARTH ELEMENT STUDY ON SCHEELITES FROM TUNGSTEN DEPOSITS IN SOUTHWEST OF ASTANEH, ARAK, IRAN. IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY[Internet]. 2005;13(1):29-42. Available from: https://sid.ir/paper/3781/en

IEEE: Copy

M. GHADERI, Z. FARDIN DOUST, and J. HERRIN, “RARE EARTH ELEMENT STUDY ON SCHEELITES FROM TUNGSTEN DEPOSITS IN SOUTHWEST OF ASTANEH, ARAK, IRAN,” IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY, vol. 13, no. 1, pp. 29–42, 2005, [Online]. Available: https://sid.ir/paper/3781/en

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