Petrography, mineralogy, alteration zones and geochemical exploration in Golcheshmeh Area, East of Iran

Abstract

The study area is located about 220 km southwest of Mashhad and 80 km south of Neyshabur, at 54° 42' 15" to 54° 43' 40" longitude. Initially, remote sensing is carried out based on the SAM method and it denotes propylitic, carbonitization, silicification and argillic alterations. This area comprises of outcrops of Paleocen-Eocene volcanics. Golcheshmeh area also shows copper mineralization at surface such as malachite, chrysocolla and chalcocite. The copper minerals are seen as filling voids and thin veinlets in association with volcanic rocks in the study area. In some parts of the district, the movement of copper solutions is controlled by linear structures and fault zones, and the amount of solutions’ penetration-which differs from a few centimeters to several meters - in the host rocks is dependent on the wall rock composition, texture and the volume of the solutions. Based on the analysis, 80% of the samples show more than 1% copper.

Keywords

References

[1] Ruttner A., Stöcklin J., "Geological map of Iran, scale 1:100,000", Geological Survey of Iran" (1967).

[2] Berberian M., King G. C. P., "Towards a paleogeography and tectonic evolution of Iran", Canadian Journal of Earth Sciences (1981) 18: 210-265.

[3] Alavi M., "Tectonic map of the Middle East, scale 1:2,900,000", Geological Survey of Iran(1991).

[4] Kruse F.A., Lefkoff A.B., Boardman J.B., Heidebreicht H.K.B., Shapiro A.T., Barloon P.J., Goetz A.F.H., "The Spectral Image Processing System (SIPS)-interactive visualization and analysis of imaging spectrometer data", Remote Sensing of Environment 44, (1993) pp. 145-163.

[5] Clark R.N., Swayze G.A., Gallagher A., King T.V.V., Calvin W.N., "the U.S.Geological Survey, Digital Spectral Library: Version 1:0.2 to 3 μm. United States Geological Survey", Open File Report 93-592. (1993) 1326 pp.

[6] نادری میقان، نصیر، "نقشه زمین‌شناسی 1:100000 کدکن"، انتشارات سازمان زمین شناسی و اکتشافات معدنی ایران (2000).

[7] Whitney D. L., Evans B. W., "Abbreviations for names of rock-forming minerals", American Mineralogist, 95 (2010) 185–187.
Iranian Journal of Crystallography and Mineralogy
Volume 23, Issue 4 - Serial Number 60
January 2016
Pages 639-650

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History

  • Receive Date: 02 July 2025
  • Revise Date: 04 February 2026
  • Accept Date: 02 July 2025

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