次火山岩型和斑岩型矿床地质对比

SUB VOLCANIC TYPE DEPOSIT AND PORPHYRY TYPE DEPOSIT

国内外资料表明，次火山岩型和斑岩型两类矿床在找矿标志和找矿方向上存在较大差别。在同时代的火山岩区，斑岩型铜矿化和次火山岩型铜矿化可以共存，但是，两者不是单一成矿阶段的产物。

The data from China and abroad show that big differences exit between the two types in the prospecting indications and exploration directions.In volcanic regions of the same age,porphyry and subvolcaic type copper mineralizations may coexist,but the two mineralization types are products of diferent metallogenesis relatcd with same source polystage intrusion,instead of the product of a simple metallogenesis stage.