Open AccessTOURMALINE MINERALIZATION IN CARBONACEOUS SHALE OF THE BAIKAL DEPOSIT (SOUTH URAL)
Author(s) -
А. В. Сначёв,
A. V. Kolomoets,
Михаил Анатольевич Рассомахин,
В. И. Сначёв,
R. S. Kisil
Publication year - 2021
Language(s) - English
Resource type - Conference proceedings
DOI - 10.17072/chirvinsky.2021.217
Subject(s) - tourmaline , geology , mineralization (soil science) , oil shale , geochemistry , quartz , mineralogy , sulfide , paleontology , metallurgy , materials science , soil science , soil water
The article discusses the geological structure of the Baikal deposit, located within the Kumak ore field and confined to the black shale of the Bredy Formation (C1bd). It has been established that the gold mineralization within the occurrence is confined mainly to the members of quartz-mica-tourmaline metasomatically altered carbonaceous shales. Gold is noted here in intergrowth with tourmaline. In terms of their chemical composition, tourmalines belong to dravite and foitite and are close to those of orogenic gold and gold-sulfide deposits. The close intergrowth of thin needle- like tourmaline and gold indicates the synchrony of their formation and allows the manifestation of Baikal deposit to be attributed to the quartz-tourmaline formation.