Distribution of Skarn Minerals and Sn in the Epidote in Jinchuantang Mining Area, Hunan

Jinchuantang is an important mining area in operation in the super large W-Sn-Mo-Bi deposit of Shizhuyuan, Hunan Province.The mineral characteristics of the massive skarn of the area are: the garnet is mainly of anorthite; the pyroxene exists as continuous series of dipside-salite-ferrosolite-hedenbergite; the feldspar is mainly of anorthite; the wollastonite is found as a type of a rare mineral- (Mn, Fe) -wollastonite; the sphene is widely-spread as a skarn mineral, and its content of aluminum oxide is relatively high (maximum content being 8.32%wt), and the Sn content of some sphene minerals is also relatively high; Sn is also widely spread in the mineral epidote, and the content of SnO₂ is 0.2%-2%.According to the distribution and the content of SnO₂ in the mineral epidote, it is found that, the content has the power function with its location, and the calculated fractional-dimension from the distribution of tin oxide is 1.93.From the mineral micro-scale, the transportation and distribution of ore element tin possess the fractional dimension time-location structure, and it is confirmed that the self-constructing critical situation is the basic dynamical characteristic of the super large multi-metal deposit of Shizhuyuan.