1. The Hongniu Cu deposit in "Sanjiang Metallogenetic Zone" is occurred in the skarnization alteration zone in the margin of marble and the hornfels body.
   “三江成矿带”内的红牛铜矿,赋存于大理岩边部矽卡岩化蚀变带及角岩体中。
2. In the northwest of China, auriferous altered cataclasite, adular-sericite quartz vein and quartz reef types are present, and metallogenetic epoch is mainly Hercynian period.
   西北部地区主要有蚀变碎裂岩型、冰长石-绢云母石英脉型和石英脉型等，成矿时代主要为海西期；

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