Geology, mineralogy and formation conditions «oskolskiy» gold-bearing conglomerates from KMA
Onikienko L.D., Yuganov S.S., Zakharov D.O., Ivanov M.A. (MGRI-RSGPU)In this article the characteristics of geological position and gold-uranium-bearing Precambrian conglomerates and gravelites Starooskol’sky area are shown. The results of the mineralogical and petrographic studies of the clastic rocks confirm the involvement of explosive volcanic activity during the Late Archean-Early Proterozoic time. The pebbles of «blue» quartz are considered to be amygdales that have been taken from underlying volcanic rocks. Gas-hydrothermal systems were involved in ore-forming mineralization.
Key words: Kursk magnetic anomaly, Starooskol’sky area, gold-bearing conglomerates and grits, Late Archean — Eatly Proterozoic volcanism, amygdales of blue quartz, gas-hydrothermal processes.
The pebble of blue concentrically colored qurtz. XPL.
The green mineral from mica group. The replacement of opaque mineral. PPL