Gold nanoparticles in acidic igneous rocks of Ramand area, south of Qazvin, northwest of central Iran

Authors

1 Prof., Dept., of Geology, Faculty of Earth Sciences, Shahid Beheshti Univeristy of Tehran, Iran

2 Ph. D. student in Economic Geology, Faculty of Earth Sciences, Shahid Beheshti Univeristy of Tehran, Iran

3 Assoc. Prof., Dept., of Geology, Payame Noor University, Qazvin, Iran

4 Ph. D. student., Dept., of Medical Nanotechnology, School of Advanced Technology in Medicine, Tehran University of Medical Sciences, Tehran, Iran

Abstract

Ramand area is located 80 km south of Qazvin province, northwest of central Iran. The area is part of the magmatic belt of Urumieh- Dokhtar of the structural zones of Iran. The host rocks of the area consist of rhyodacite, rhyolites, rhyodacite tuff, crystalline tuffs and rhyodacite flow lavas. The pyroclastic and volcanic units are interrupted by major faults such as Korcheshmeh fault, Hassanabad fault and sub-faults that have a northwest-southeast extension. The main minerals of these rocks include K-feldspar, quartz, albite, biotite and rock fragments (in tuffs) with micro-granular - microporphyrite textures. The extensive alterations in the study area are argillic and silicifications. Pyrite, hematite and goethite are the main ore minerals of these rocks.  The texture of these minerals is disseminated (primary) and of supergene replacement type to colloform (secondary). Pyrites vary in size from coarse to very fine in subhedral to anhedral forms scattered along fracture surfaces. Gold nanoparticles have great potential in the glass industry and for the diagnosis, cure and treatment of cancer. High viability, selective accumulation in cancer cells and low toxicity are among the advantages of these particles. The results obtained by capillary electrophoresis analysis shows that the pyrite minerals of these rocks contain of nanoparticles gold.

Keywords

References

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History

  • Receive Date: 03 June 2021
  • Revise Date: 03 September 2021
  • Accept Date: 06 September 2021

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