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福建碧田矿床成因上是与燕山晚期次火山岩有关的、以银为主的大型铜金银矿床。该矿床产于燕山早期花岗岩中,在其铜矿石内发现了较多的锌砷黝铜矿、铋砷黝铜矿、铋锑黝铜矿、碲砷黝铜矿、针硫铋铅矿、硫铋铜矿、硫砷铜矿等硫盐矿物及少见的钨锡硫化物——硫锡铁铜矿、硫铁锡铜矿和硫钨锡铜矿。这些矿物形成于成矿作用早期的黄铜矿-斑铜矿-黄铁矿阶段。成矿温度在260～380℃之间,最低成矿压力20～40 MPa,硫逸度(lgfs_2)=-8.74～-12.06。钨锡铋矿物的发现表明,燕山早期花岗岩可能为成矿提供了部分物质来源。
The genesis of the Bita deposit in Fujian is related to the late Yanshanian secondary volcanic rocks and is mainly composed of silver-based large-scale copper-gold-silver deposits. The deposit was produced in the early Yanshan granite. In the copper ore, there are many zinc-arsenite tetrahedrite, bismuth arsenate tetrahedrite, bismuth antimony tetrahedrite, tellurite arsenate tetrahedrite, needle bismuth bismuth ore, Sulfur bismuth copper ore, sulfur arsenic copper ore and other sulfur salts and rare tungsten-tin sulfide - sulfur tin iron copper, sulfur iron tin copper and sulfur tungsten tin copper copper. These minerals formed in the chalcopyrite-bornite-pyrite stage of the early mineralization. The metallogenic temperature is between 260 ℃ and 380 ℃, the minimum metallogenetic pressure is 20 ~ 40 MPa and the sulfur fugacity (lgfs_2) is-8.74 ~ -12.06. The discovery of tungsten-tin-bismuth minerals suggests that early Yanshanian granites may provide some of the material sources for metallogenesis.