Analysis Of The Hebei Northern Daxigou Of Gold Deposit Geochemistry And Prospecting Direction

North China Craton geological environment is complex, where has a good goldore-forming condition and an uneven spatial distribution of gold deposits and all kinds ofdeposit types. It is rich in gold mine in this region, where is the gold production base.Daxigou gold deposit is located in the Inner Mongolia Axis eastern section of thenorthern margin of the North China platform paddock arch off beam (level III)，on theWulong ditch-yellow flag fault zone (level IV). By previous data collecting, collating,analying, field reconnaissance, endoscopic analying indoor, doing the main traceexperiment, stable isotope sulfur experiment, hydrogen and oxygen isotope data toanalyze and summary the historical evolution of the North China platform and themetallization of the gold multiple-metal in Hebei, getting the geochemical characteristicsand prospecting direction, reached the following understanding:（1）Daxigou Gold deposits has an intense alteration, which Mainly potassium，silicification，chlorite，pyrite and so on. The gold grade level and potassic alteration, silicification andpyrite strength were positively correlated. So Potassic alteration, silicification, pyrite is the mainindicator of looking for gold.（2）Pyrite sulfur isotope get far away form the ignores the sulfur and morenegative δ34S values deviate from the meteorite. Combination of geological backgroundto exclude sedimentary mineralization，the ore sources may be derived from mantle andthe layer of the earth. Hydrogen and oxygen isotopes indicate the sources of ore-formingfluids，some from magmatic water，add in meteoric water later.（3）According to the main data analysis showed that the diabase veins areintermediate-basic dike, belong to alkaline rock series; Trace elements normalized curvedistribution is roughly the same with wall rock and vein, they belong to the samemagmatic evolution series; Diabase veins cut wear quartz veins, so diabase veins withthe formation of gold depend on each other in space, time apart, all belong to magmamelting or molten product. Ti is not the gold carriers, but the signs of the gold mine.（4）The Daxigou gold deposit is mainly controled by the northeast fracture.There is a good geological condition, along the northeast to the extend zone of theground dam area. The mine northeast Oriental to NE55°～70°on the last paragraph:Sahara Bay, Hanjiawopu, Tiger goumen, Tianqiaogou beam head. The followingparagraph: sulcus, huangtukan region are also located in the periphery of the volcanicrock edge, tectonic belt is the best choice for looking for gold mine.