Several gold ore-concentrated areas have been recognized in the destruction zone of North China Craton (NCC). However, deposits western part received less attention. Miaoan, a typical Au-polymetallic deposit northern Taihang Mountain, provides good sample for deepening our understanding genesis zone. In this study, detailed ore geology, pyrite Rb-Sr age, trace element and S-C-O isotopes Au-bear...

Attenuation images are obtained from 6287 t-star spectral measurements of P-wave microseismic events in a mine setting. The resulting three-dimensional quality factor (Q) model reveals that most of the study region is characterized by low Q values or high attenuation (Q<25), probably caused by cavities and fractures due to mining activities. Q values between 25 and 50 show a high spatial correl...

the gandy gold-base metal deposit is located in tertiary torud-chahshirin volcano-plutonic range, north of central iran. various styles of gold mineralization occur throughout the range. mineralization at gandy occurs in close spatial relation with rhyolitic domes in a caldera setting in a series of narrow brecciated veins. two mineralogically and spatially different argillic alterations have a...

zafarabad iron deposit is located northwest of divandareh, in the northern margin of sanandaj-sirjan plutonic-metamorphic zone. the deposit is in lentoid to tubular shape, within a shear zone and occrrued in host rocks of calc-schist and limestone. magnetite with massive, cataclastic and replacement textures are the main phases, while pyrite and other sulfide minerals are found. major and trace...