GEOCHEMICAL METHOD FOR SEARCHING MINERAL RESOURCE DEPOSITS

摘要

The invention relates to the field of applied geochemistry and could be used in searching mineral resource deposits, in predictive-geochemical mapping of enclosed and semienclosed territories on the basis of data from geochemical mapping territories being investigated and following analyzing samples of soil. The positive result is achieved by congesting the sample net density (especially in searching small and middle gold ore objects), picking samples weighing 50-60 g from the horizon В1; from each picked sample, a suspension is prepared, and from that suspension, a superfine fraction weighing 2-3 g and 2-35 μm in size is extracted and dried at a room temperature for not less than 24 hours. The dried superfine fraction is applied on a glass palette made in the form of plane table with dimensions of 12×10×0.3 cm and square marking 5×5 mm in number not less than 200 squares; the obtained dry superfine sample fractions are placed into those squares and analyzed for rare and dispersed elements by the method of laser ablation; whereupon, in accordance with content of chemical elements in those fractions, maps of distribution of those elements in area are drawn, zones of anomaly contents of indicator elements are revealed on those maps, and the presence of ore mineralization zones, ore bodies and rare element deposits based on the revealed zones are determined based on the revealed zones.