Mineral composition and paragenesis of altered and mineralized zones in the Gadir low sulfidation epithermal deposit (Lesser Caucasus, Azerbaijan)

Subject Areas : Mineralogy

Novruz  Novruzov ¹ (Institute of Geology and Geophysics of ANAS. H. Javid prospect 119, Baku, Azerbaijan)
Anar  Valiyev ² (Azerbaijan International Mining Company. H. Javid prospect 521, Baku, Azerbaijan)
Aydin  Bayramov ³ (Azerbaijan International Mining Company. H. Javid prospect 521, Baku, Azerbaijan)
Sabuhi  Mammadov ⁴ (Azerbaijan International Mining Company. H. Javid prospect 521, Baku, Azerbaijan)
Javid  Ibrahimov ⁵ (Azerbaijan International Mining Company. H. Javid prospect 521, Baku, Azerbaijan)
Aygul  Ebdulrehimli ⁶ (Baku State University, Baku, Azerbaijan)

Received: 2017-12-05 Accepted : 2018-12-05 Published : 2019-01-01

Keywords: Ore mineralogy, Gold mineralization, Gadir, Low sulfidation epithermal deposit, Hydrothermal alteration,

Abstract :

Mineralogy, gold mineralization and metal contents of the Gadir deposit have been investigated during current research in order to determine the geological conditions, temporal and spatial relationship with certain mineral assemblages and associations. The mineralogy of orebodies is mainly composed of pyrite, chalcopyrite, sphalerite, galena, petsite, native gold, electrum and subordinate molybdenite. Gold is hosted by pyrite and chalcopyrite minerals in fracture-filling textures and forms a thin dispersion condition. The native gold was observed in chalcopyrite, which is probably related to the second stage of ore deposition. The Gadir deposit can be classified to Au-Ag-Cu-Zn±Pb stockwork-type mineralization which is characteristic of low sulfidation epithermal deposit.

References:

1. Agakishiyev A, Chalabi H, Isazadeh A, Gadimov S, Akbarov M, Alasgarov R (2004) Report on work results on gold-bearing assessment of Gedabek copper-pyrite deposit for the period of 1992-2002 years. Baku.


2. Baba-Zade V, Makhmudov A, Ramazanov V (1990) Copper and molybdenum porphyry deposits: Baku. Azerbaijan State Publishing House, (in Russian).


3. Bayramov A (2014) Stages of mineralization of the Gedabek deposit/ 1st International Scientific Conference of young scientists and specialists, “The role of the multidisciplinary approach in the solution of actual problems of fundamental and applied sciences (Earth, Technical and Chemical)”. Baku, p. 43.


4. Corbett G (2002) Epithermal gold for explorationists, AIG News 67:1-8.


5. Doebrich L, Babazade V, Kekelia S, Ramazanov V, Mamedov Z, Ismailova A, Abdulaeva S, Kekelia M, Kuloshvili S, Gagnidze N, Sadradze N (2008) Geological-Geophysical and Geochemical Models of Ore Magmatic Systems of Porphyry Copper Deposits of the Kedabek Mining District. , Proceedings of LEPL Alexandre Janelidze Institute of Geology 124:307-316 ,(in Russian).


6. Gadimov S, Veliyev A, Jafarov Z, Ibrahimov J, Bayramov A, Mammadov S (2014) About the results and future planning of the perspective areas (Au, Ag, Cu, Mo, Zn) of Gedabek Ore District, Gedabek, Azerbaijan.,  AIMC Gedabek Exploration Group Report.


7. Gedabek Exploration Group (2015) Report on exploration and planning of the Gadir low sulfidation epithermal deposit project, Gedabek, Azerbaijan.


8. Ismet A, Hassanov R, Abdullaev I, Bagirbekova O, Jafarova R, Jafarov S (2003) Radiochronological Study of Geological Formation of Azerbaijan, Nafta-Press, Baku, (in Rusian).


9. Izawa E, Urashima Y, Ibaraki K, Suzuki R, Yokoyama T, Kawasaki K, Koga A, Taguchi S (1990) The Hishikari gold deposit: high-grade epithermal veins in Quaternary volcanics of southern Kyushu, Japan, Journal of Geochemical Exploration 36:1-56.


10. Mammadov S (2015) Peculiarities of the distribution of some elements in polymetallic ores of the Gadabay deposit in the light of new data (Lesser Caucasus). A popular science magazine , (Estestvennie i tekhnicheskie nauki), 2nd edition,  (in Russian).


11. Milesi J, Marcoux E, Sitorus T, Simandjuntak M, Leroy J, Bailly L (1999) Pongkor (west Java, Indonesia): a pliocene supergene-enriched epithermal Au-Ag-(Mn) deposit, Mineralium Deposita 34:131-149.


12. Pierre H (2013) The Gedabek quartz-adularia-pyrite altered, Cu-Au-Ag epithermal deposit, Western Azerbaijan, Lesser-Caucasus: Geology, alteration, mineralization, fluid evolution and genetic model. University of Geneva, Switzerland, p. 37.


13. Simmons SF, White NC, John DA (2005) Geological characteristics of epithermal precious and base metal deposits, Economic Geology 100:485-522.


14. Sosson M, Rolland Y, Müller C, Danelian T, Melkonyan R, Kekelia S, Adamia S, Babazadeh V, Kangarli T, Avagyan A (2010) Subductions, obduction and collision in the Lesser Caucasus (Armenia, Azerbaijan, Georgia), new insights, Geological Society, London, Special Publications 340:329-352.


15. Valiyev A, Bayramov A, Mursalov S (2013) Geology, resource, and future ore perspective of the Gedabek gold deposit, Azerbaijan, Conference on Recent Research Activities and New Results about the Regional Geology, The Geodynamics and the Metallogeny of the Lesser Caucasus. Tbilisi State University, Georgia, p. 23.


16. Veliyev A, Talibov M (2012) About Gadabay ore area and Gadabay gold mine (Republic of Azerbaijan), International Workshop Gold and Base Metal Deposits of the Mediterranean and the South Caucasus- Challenges and Opportunities. Tbilisi, Georgia.


17. White NC, Hedenquist JW (1995) Epithermal gold deposits: styles, characteristics and exploration, SEG newsletter 23:9-13.