Xicha,Ginchang Gou Gold ore deposit are belong to strata-bound break-alterationtapy,It's metallogenic times are in the early Yanshanian to lndo-chinese epoch,The informa-tion about the element abundance and 1tls evolution in stratiform indieate that the etallo-genic source materiab of the deposit have double features.some of them came from strtiform and perhaps parts from magmatic rocks.Stable isotopic data as follow :Xicha gold are deposit:δ34S=1.9‰ ~7.4‰ ;Jin Chang Gou:δ34S=3.2‰ ~5.1‰.It indicate this two ore deposit with similar sulphur isotopic component have the similar sulphur source.δ34OH2O=5.3‰ ~ 66.4‰ ;δ34S=一6.I‰.Fluid inclusions datas indicate that metallogenk fluid aremainly chlorinated water.metallogenic tempeture concentrate on the 142~ 290℃ .From this,we infer the ore—bearing solutions probale the mixture water of magmatic water and atmospheric precipitution.The ore-beafingsolutions possible came from the stratiform.
There exists many refractory gold deposites occuring in the clastic carbonaceous rocks richeniag organic compounds in sea facies、Gold exist as micrograaual inclusion in the loading-gold minerals:pyrites and carbons.Gold caa。t be leached by traditional leaching method with cyanides,and the leaching ratio is about 10 、Eliminating the inclusion of laoding-gold sulfides is a powerful measure to make gold dissolve,sodium hypochlorite is a oxidant adapting to oxidize and decompose sulfides to liminate inclusions to leach gold in carbonaceous pulp.The oxidation of pyrites is influenced by the concentrations of NaClO and NaCl,solution-solid ratio and pH.After the sulfides is decomposed by sodium hypochlorite,gold is exposed to be leach by sodium hypochlorite,the leaching ratio is up to 85%.
This paper describes briefly the excecutive environment of AutoCAD .basic functions and characteristics-It also introduces the main functions of some CAD software for mining made by author.