| Shanyang County Shanxi province silver factory ditch-ancient tomb ditch copper silver mine, locate on the boundary between Shanxi and Hubei, and belong to the Shanxi Henan Hubei the beneficial area of mineralize. In 97 my brigade abnormity identify, We estimate the resources of the copper and sliver year on large scale.Camp belong to the south Qinling orogenic belt middle segment palaeozoic strench basin fold indo-chinese epoch drape north part, and belong to the Miliangchuan schiefer. Structural lineament collectivity is similar to earth-west. The emergence stratum mainly is Palaeozoic sediment rock series, drape, rift grow,magma activity is delicacy.bed style mainly is sediment, sediment-reconstruct.From the characteristic of district gravity, the characteristic of remote sension .we can see that ore area develops south-north consotium rift.It not only controls the eastern edge of Zhenxun basin, but also controls the form of bed.From the characteristic of district geochemistry ,we can figure out, Cu, Ag, Pb, Zn abnormality main spread along the west branch river set and close to border layer, and the rock chemistry analysis prove, west branch river set have the higher Ag chemical element abundance , the Cu have the characteristic of asymmetry distribute, and display the migration of element in the late multiphase tectonic activity.Ore area locate on, silver factory ditch-ancient tomb ditch in west branch river set lower bench ,stratigraphic succession ,rock assemblage are different with circumference.Most is a set of intraclast congeries silica rock .In search of it ,its distribution range in the silver factory ditch- ancient tomb ditch. On two side big set mutation composition conglomerate becoming heterogenesis bourn of stratum.Through the search of bourn of intraclast congeries silica rock, its earth and west side all grow consortium robble. Further research of lithofacies pvove:lode country output points belongs to tidal-flat facies.and the two sides belong to littoral facies-estuarine facies.Ore area petrochemistry analyse also prove:intraclast congeries silica rock in basin have higher Cu, Ag abundance than circumference pena .The prominence inhomogeneity of the Cu distribution indicates reconstruct of the late construction.The mineral rock-silica rock mostly composes of three kinds of silica qualities, and the first structure jasper silica rock , the second icrocrystal quartzite, the third the quartz grain clast .cement is carbonate ,contain a little amount carbonate loach .silica rock ,commonly assume edge angle or hypo- edge angle .Lode country assume silllike-similar silllike, and the next big anastigmatic, ground and west branch river set strench are consistent.It Suffer the gravel silica rock , arena silica control.A handful of Lode country or main Lode country byway little orebody assume vein, or have the characteristic of balk reappear, compound of branch.These manifest the obvious characteristic of ore construct control. On the interjunction of twist of drape , rift and mine layer form bucked ore.Ore type primarily contains the copper sand scraps slilica rock or contain the copper gravel scraps silica rock , a little amount powder sand sericite callys type copper silver mine and dolomie type copper silver mine.The main metals mineral are chalcopyrite , the next clinohedrite, alpha chalcocite bornite , malachite and azurite .A little amount blende , galena incidentally ryby silver, bismuth.The compose of sulphur isotope is adjacence, scope is+3.29 %- 9.73%may belong to sedimentary origin. In mine layer rock the charcoal quality be high, confers sulphur isotope that biology disoxidation.Via measure ore fluid enclosure, consider the ore fluid is a NaCl-H2Osystem. Single enclosurethe uniform temperature(Th) all are at 95-135 C worth for110-120 C .Salinity is 4.9-11.5 wt % NaCl, many fasten on 7-10 wt% NaCl.The Compressive stress is 250-375 10'Pa, equal to deep at 1 thousand meters or so. Analysis of uniform temperature discovers, majority samp... |
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