Orientated Prospecting Prognosis Of The Concealed Ores Of The Xiaohe～Shimenkan Copper Deposits In The Dayao Copper Deposits Area

Malmstone copper ore is an important stye of copper deposit. In china, malmstone copper ore are mainly distributed over the Mesozoic era continental facies basin in the middle area of Yunnan province. Dayao copper deposit is the typical representative.Dayao copper deposit locating in the north of the basin is the best mineralizing concentration area of malmstone copper in the middle of Yunnan province. There are six ore deposits in all explored and assessed: Aodiju ore deposit, Liuju deposit, Xiaohe deposit, Shikanmen deposit, Luojimuzha deposit, yanzikou deposit. Except for Aodiju deposit, the other deposits are located in the malmstone stratum of liuju area of the Cetaceous Maton hill group.During the twenty-year exploration, the main ore deposit that had been explored has been consumed. Till the end of 2004, there was only thirty thousand tons (including the loss) of mental reserves that can be explored. It can keep the ore companies in business two or there years. The dispearance of existing resources makes it ergent to search new alternative resources.Xiaohe-shimenkan area has always been regarded as the best area for new one deposit in the area of Dayao copper deposit. The deep deposit is southern part of Liuju deposit. The location prediction has been always the problem for ore deposit because of the deep deposit and high cost of exploration.According to the deep blind deposit in Xiaohe-shimenkan, lots of geological specialists have done much efforts in several decades. But in the recent precess of the Xiaohe deposit exploration, the geologicalfact dose not correspond to the prediction. This article, combined with the province-university project, analyzing geological information carefully, and contrasting with the previosly research, makes the new predition about Xiaohe-shimenkan blind deposit mainly by the structure control deposit law. And we wish to provide the mineral exploration.There are two questions: the turn where the axis of Xiaohe ore deposit to the shimenkan and how the deposit body affected by the blind regmagenesis. Focusing on them, author has been investigating in open country and collecting, arraging andanalyzing material for one and a half year. After having done the study on the new deep prediction, author presents new opinion on the base of part of precious geological opinion .1, Xiaohe deposit direction and turn are mainly controlled by the second structure rochet vault in the back of Bigsnown mountain. It is conjectured that the axis extent with the current direction to the 180# exploring line and turn to northwest-southeast direction. During the extension, the deposit body would extend from deep to low instead from low to deep. The turning place was level corresponding to the core of rocket vault.2, There are a chain of radiate blind regmagenesis controlled by the rocket vault. They were east-west direction and were incised, removed and cut and lose their continuum. These blind regmagenesis were most level ones and showed some law to certain extend. They are the antimere to those that have been explored. The 180# was the axis. They located in the radiate shape around the rocket hill.