METAMORPHIC fluids, an important type of the ore-forming fluids within the Earth’ s crust, are the necessary materials for metamorphic hydrothermal ore format
SELENIUM is a highly dispersed element with a lower Clarke of 0.05×10~(-6) and rarely forms its own independent deposits in the crust. In recent years by the
This paper is a theoretical discussion of socio-cultural aspect of second language acquisition,which is frequently ignored in the mainstream research literature
THE author thinks that the ore-forming solution is formed not by the near-neutral brine but by the strongacid solutions. Some evidence are the following: (i) T
1 Geological setting and samples Songxi Ag-Sb ore deposit is located in the southern margin of Yongding-Mexian Paleozoic depressionof South China Caledonian or