STRUCTURAL AND GENESIS FEATURES OF SECONDARY QUARTZITE OF COPPER-PORPHYRITIC KASHEN DEPOSIT: (MARTAKERT REGION, NAGORNO-KARABAKH REPUBLIC). (2015). Proceedings of the YSU C: Geological and Geographical Sciences, 49(1 (236), 3-10. https://doi.org/10.46991/PYSU:C/2015.49.1.003