search for gold ore objects

The main task of the work

- carrying out complex geophysical works using electrical and magnetic exploration methods within the Ozernovsky ore field in order to identify high-resistance polarizing objects that correspond to the parameters and characteristics of presumably ore-bearing objects;

- clarification of the spatial position, elements of ore zones; study of the vertical section to a depth of 200-300 meters and preparation of the site for exploration ditches and verification drilling. Based on the results of the work, the most promising bodies of class 5 were identified, corresponding to zones of calcification with weak sulfide mineralization. Objects of class 3 and 4 are also of search interest as metasomatosis zones. In the period from 2011 to 2012, employees of the company NWGGC Geocomplex LLC conducted ground-based geophysical prospecting for gold. In total, more than 100 bodies of hydrothermal quartzites and quartz veins were found within the Ozernovsky ore field. All of them are characterized by high gold content, and some contain industrial concentrations of gold. The content in different parts of the Ozernovsky field varies from 14.2 g/t to 64 g/t.

итоговая карта классов, построенная по данным неземной геофизики: электроразведка методом ВП-СГ

The minerals of the Hautavaara greenstone structure are represented by sulfuric, polymetallic, copper-nickel ores, and gold mineralization, which belong to various ore-formation types of deposits of the corresponding types of minerals.

A complex of geophysical works was carried out on the studied area: magnetic exploration 1:10000, electrical exploration by the IP method in the modification of the median gradient 1:10000.

The main task of the work is to carry out complex geophysical works and geological routes on a scale of 1: 10,000 in the search for objects that are promising for precious metal mineralization and further exploration.

graph of polarizability by profile

geoelectric section of specific electrical resistance according to the results of electrotomography

graph of apparent resistance by profile

graph of the total vector of the anomalous magnetic field

geoelectric section of polarizability according to the results of electrotomography

The most interesting, according to the results of joint geological and geophysical work, is a block of rocks extended in the submeridional direction in the Central part of the site at line 1400-2600 and points 1350-1450.

According to its geophysical parameters, this object is characterized as high-resistance, polarizing, and non-magnetic. Subsequent mining and geological work confirmed the presence of an orthophyric dike in this interval and the presence of a useful component in this object.

геоэлектрический разрез удельного электрического сопротивления

геоэлектрический разрез поляризуемости

geological section based on the results of geophysical and geological data

Example of a hydrothermal Deposit with quartz-sulfide mineralization. The maps show that the ore zones are well correlated by anomalies of apparent resistance and induced polarization.

Mpopo, resp. Angola