Study On Mineral Prediction And Method Of The Placer Gold In North Of Heilongjiang

It is one of the placer gold distribution in the northern of Heilongjiang,China. There isthe most important area of placer gold in Da and Xiaoxingan Moutain.Since the earlyProterozoic tectonic.It can make the good condition for polymetallic and precious metalfor the complex geological.According to the command of the mineral resources evaluation of the country.Onthe base of the basic geological survey and mineral exploration data,with the theory ofadvanced mineral resource evaluation,it carry out the work of potential resource inHeilongjiang.It is belong to Daxing’an Mountain range,Heihe and Yichun.1. The background of metallogenic geologicalThe Pre Mesozoci is between in the Siberia and North China, The Mesozoci isbetween in the Siberia, North China, Pacific protocontinent. In the study is located inback-arc-basin system of Daxing’an Mountain range,in Magmatic Arc of Xiaoxing’anMountain range and Zhangguangcai Mountain range.Lithostratigraphic unit:Neoproterozoic Lower Cambrian, Paleozoic, Mesozoic and Cenozoic.There are marinevolcanic and continental volcanic.Intrusive Rocks was made in Northeast ofTianshan-Xinmeng Mountain. There are a lot of magmatic activity. The minerogeneticepoch lasted from Neoarchean, Paleoproterozoic and Mesoproterozoic,lateCambrian-early Ordovician and Late Triassic to Lias. being the culmination periods. It is about110,000km2of exposing area. It included the different intrusive rocks of everyperiod and the lithology is mainly the middle acidic intrusive rocks.These metamorphicrocks are mainly distributed over Daxing’an Mountain range, Xiaoxing’an Mountain rangeand Zhangguangcai Mountain range. The crystalline basementcame into being.2. Characteristics of the regional mineral resourcesThese placer golf of Heilongjiang are mainly distributed over Heilongjiang,Eergu’Na,Duobaoshan and Heihe, Xiaoxing’an Mountain range and ZhangguangcaiMountain rangemetallogenic belt.According to mineralization, metallogenic environmentand mineral resources the placer gold was divided to the alluvial, the eluvial,the brecciaGold Placer.In spatial distribution,it located an off branch of the Heilongjiang,SonghuaJiang in Mohe,Huma and Heihe.There are a lot of Gold Placer of Quaternary alluvial. It can be divided to three kindof the prediction area and include the type of Gulianhe of Mohe,Dalahan of Huma andFabiela of Heihe.3. Prospect catchment basinFrom this study it can compile the map of catchment basin and1:250000map scalewith the river system. It will get the prospect catchment basin through that statistic analyzethe all kinds of diagrams. It also can get73prediction units in12maps of Heilongjiang.4. Mineralization prognostic areaAccording to study on the mineral of Gulianhe,Dalahan and Fabiela,it get thepredictive factors of Gold Placer in Heilongjiang.The model of Gold Placer in northern ofHeilongjiang is established and we can get the geological variables from themodel,geological map, mineralization map and prospect catchment basin.We can get19units of A rank and23units of B rank, also get23units of mineralization prognostic areasand compile the unit prediction map of Gold Placer in northern of Heilongjiang.5. Resource estimationThis paper predicts the Gold Placer resource in the northern with the volumemethod,the regression analysis and Synthesis Method.It get5units of A rank and B unitsthat it will be prediction mineralization area.The total resource is112008.7kg of thevolume method and regression analysis is133288.1kg. 6. Exploration work proposalThis paper presents11units of the proposal prospecting region that include:theShabaosi mountain, Dalin River West, Yu Ying Zhen, San Lian mountain, Sui naopo,Mantou moutain, Xinglong Zhen, boat shaped mountain, nine grooves, Menlu River,Nenjiang xian.