Structural Controls on Gold Mineralisation in Nagavi Area, Gadag Schist Belt, Karnataka, India.

Autor: Agasnalli, Chandrashekharappa, Ramalingam, Jayanthi, Lakkundi, T. K., Deepak, M. S.
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Zdroj: Journal of Mines, Metals & Fuels; Nov2022, Vol. 70 Issue 11, p590-601, 12p
Abstrakt: Minerals and metals play a very important role in the country’s economic growth and as well as construction industries. Minerals also support automobile industries as they are required to manufacture steel and other products using various minerals. So, minerals and mining industries are the backbones of any country’s Gross Domestic Product (GDP). In the study area, Banded Iron Formation (BIF) hosted auriferous sheared zones which are indicating very good gold and associated mineralisation. In the study area, different litho units occur like metabasalt, schist, shale and pyritiferous metabasalt. Banded Iron Formations (BIFs) are dominating in the study area along with quartz vein, Banded Fe-Mn Chert and BIFs float. Different rock chip samples show encouraging gold mineralisation zones. Auriferous shear zones on top of the hilltop in the reef. In the study area, Petrography and mineralogy have played a vital role in gold and associated mineralisation in the Nagavi area. Gold is closely associated with sulphides, mainly pyrite and pyrrhotite, and to a lesser extent, with bismuth tellurides and carbonate minerals. The gold content range in BIF’s of the Nagavi area is from < 20 to <27 ppb. In the study area, geological structures like dips, strike, faults, folds, joints and unconformities support gold mineralisation. Majorly these structures control the gold and associated minerals. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index