Compared with typical porphyry deposes, the Yinyan tindeposit is not of porphyry type, as is considered traditionally.
与典型斑岩矿床比较，银岩锡矿不是传统意义上的斑岩型矿床。
2
It is a porphyry copper-silver-tindeposit that occurs in the transitional crust and was formed by derivatives of the lower crustal-upper mantle transitional magma.