Since 2017, AzerGold CJSC has begun a wide study of the Tulallar gold deposit. In order to extract minerals at the field, magnetic and electrical exploration work, well drilling, testing, mapping and other geological studies were carried out. Statistical and geostatistical parameters were calculated using software that meets the requirements of the international mining industry (“Microsoft Office”, “ArcGIS”, “Gemcom/Surpac”, “Geovia's Whittle 4X” and “Leapfrog" software). To determine the contours of ore formation, materials of outcrops, adits and boreholes drilled on various horizons were used, and the mineral and geochemical properties of gold-bearing rocks were clarified. Due to geological studies, it was possible to test the possibility of expanding the boundaries of the ore body and assess potential areas of the deposit. The boundaries of the distribution of gold ore deposits in depth and along the flanks, as well as their rich, medium and relatively cascade intervals within these limits, have been determined. It was shown that gold content of the deposit is associated with gold-quartz formations, the ore and non-ore minerals in their content have been studied and the gold content in various ore minerals has been clarified. In determining the boundaries of oxide and transit (transition or mixed) sulfide ores, international mining standards were applied, which are effective in processing gold-bearing ores and using refuse heaps. As a result of geological and metallurgical studies, it was found that the field area meets modern standards and international criteria.

Keywords: The South Caucasus, Tulallar, precious metals, gold-quartz formation, mining standards

REFERENCES

Abdullayev R.N. Mesozoic volcanism of the northeastern part of the Lesser Caucasus. Publishing House of the Academy of Sciences of the Azerbaijan SSR. Baku, 1963, pp. 146-151 (in Russian).

Ahmadov A.Z., Huseynov I.B. etc. Report on “Research of technological features and enrichment of gold-bearing ores of the Lesser Caucasus in 2011-2013". Baku, 2013 (in Azerbaijani).

Aliyev F.I., Agakishiyev A.M., Murtuzayev N.S. Report on “The results of the search for gold and gold-bearing complex ore deposits in the Tulallar field in 2004-2006". Baku, 2007 (in Azerbaijani).

Babazade V.M. Ore and non-ore mineral deposits. Maarif. Baku, 1986,  pp. 217-228 (in Azerbaijani).

Babazadeh V.M. Ore formations of Azerbaijan. Maarif. Baku, 1990, 280 p. (in Azerbaijani).

Babazadeh V.M., Ramazanov V.G., Mammadov M.M. Gold. In: Mineral resources of Azerbaijan (conditions of formation, patterns of placement, scientific foundations of forecasting). Ozan. Baku, 2005, pp. 425-481 (in Russian).

Guliyev E.E., Isayev E.N.  “Tulallar Gold Project Exploration Report for the period October 2018 until 12 June 2020". AZERGOLD CJSCo, COPA, 2020 (in Azerbaijani).

Gurbanov N.A., Adilov A.A., Dashdamirov T.M. Evaluation of settlement patterns and prospects of gold-sulfide ores in the north-western part of Goygol uplift. MENR MGKX MKHETI. Baku, 2014, 153 p. (in Azerbaijani).

Gurbanov N.A., Aliyeva T.M. Mineral composition, textural and structural features and conditions of formation of ores in the manifestation of salts. Materials of the Republican scientific conference on “Active problems of Geology” dedicated to the 94th anniversary of the national leader of the Azerbaijani people Heydar Aliyev. Baku – 2017, pp. 81-83.

Gurbanov N.A., Aliyeva T.M., Mammadova A.Q. Mineral composition and sequence of formation of gold alloy metasomatites. Materials of the Republican scientific conference “Actual Problems of Geology“ dedicated to the 93rd anniversary of the national leader of the Azerbaijani people Heydar Aliyev. Baku, 2016, pp.121-122.

Hasanov A.I., Namazov G.N. etc. Report on “The results of the exploration of special and complex gold-bearing deposits in the Buzlug-Bashkishlag area of Goygol uplift in 1999-2005". Baku, 2006.

Hasanov G.M. et al. “Report on the results of the geological survey conducted with general searches on a scale of 1:50,000 within the Murovdag ore region in the Lesser Caucasus (sheets 38-129- B,V,G; K-38-141- B; K-38-142 A) for 1988-2002”. Baku, 2003 (in Russian).

Heydarov G., Namazov G.  Report on "Results of exploration of copper-porphyry, copper ore deposits in the Goshgarchay ore field in 2000-2004", Baku, 2005 (in Azerbaijani).

Kashkai M.A. Petrology and metallogeny of Dashkesan and other iron ore deposits of Azerbaijan.  Nedra. Moscow, 1965, 888 p. (in Russian).

Yusifov Sh.H., Mammadov Z. Report on "Results of exploration of gold and gold-bearing complex ore deposits in Chiragdara ore field in 2003-2006”. Baku, 2006 (in Azerbaijani).

Yusifov Sh.H., Aliyev F.I., Akhundov A.M. Report on "Results of exploration of special gold, gold-copper-mineralogical and other gold ore deposits in the promising field of Goygol ore in 1991-2002". Baku, 2003 (in Azerbaijani).