关键词: 北塔山牧场, 花岗斑岩脉, 金异常, 地球化学特征, 找矿预测

Abstract: According to the 1∶50 000 geochemical survey results of Beita mountain pasture region，the gold geochemical characteristics is summarized preliminarily.The ore-forming geological conditions of Beita mountain pasture region are superior to others.The statistics indicate that，Baishanbao stratum of Silurian period is main gold ore-bearing strata in Beita mountain pasture region，and the average content of gold in Baishanbao stratum of Silurian period is higher than other strata.The mixed source series intrusive rocks of late carboniferous are beneficial to gold mineralization，and the granite porphyry vein which invaded into Baishanbao stratum is a direct prospecting criteria.The distribution of gold-anomaly is controlled by fault structure，stratum and magmatic rocks，gold occurrences and gold mineralization points arrangement along the NW-trending faults structure.There are many types of element anomaly combinations in which Au-Sb-Cu-Ag and Au-As-Sb are the main types.The average value of Au is 8.78×10^-9 with peak value is 53.8×10-9 in HS-21^# anomaly of the Aketasikuola gold mining area.After anomaly inspection，the gold mineralization points that have been found in this region have similar geochemical characteristics with Aketasikuola gold ore，and the genetic type is low medium temperature magmatic hydrothermal，showing that there is a good prospecting potential in this district.The research provides evidence for the mineral resources potential assessment and the basic geological research.

Key words: Beita mountain pasture, Granite porphyry vein, Gold anomaly, Geochemical characteristics, Prospecting prediction