Abstract:
The geop hysical exploration in the Shijulia rea has determined that the massive ores have the highest apparent chargeability and the lowest apparent resistivity.The apparent chargeability of 6%~9% for carbon-bearing slates,reticulated ores and ore-bea ring jaspilites is lower than massive ores,but the apparent resistivity is higher.The other rocks,such as silicalite,jaspilite,spilite,tuffaceous sandstone,show high resistivity and low chargeability (1%~3%) in nature.These geophysical parameters indicate that conditions are available in this areas for prospecting copper sulfide depositusing induced polarization method.Susceptibllity of Jaspilite is the highest (1 030~17 515) and the mean is 4 521×4Π×10
-6 SI,the follows are spilite and tuffaceous sand stone,their mean susceptibility is 1 000×4 Π×10
-6 S I~2 000×4 Π×10
-6 S I,the o ther ricks,such as an thrinoids lates,silica lite,secondary quartzites,impure jaspilites and ores,have weak magnetism,varied from several decades to hund reds.As the orebody is very close to jaspilites while the ores are found more often in the high-pure jaspilites than in other rocks.By its higher susceptibility,jaspilite is excellent indication to prospect copper deposit.