学科:火成岩石学 词目:流纹斑岩 英文:rhyolite porphyry 释文:流纹斑岩是潜火山岩的一种,成分与流纹岩相当。通常呈灰色、灰红色;具斑状结构,斑晶成分主要为透长石及石英,常具熔蚀边,有时含少量具暗化边的黑云母或角闪石斑晶;基质为脱玻化。常具气孔状、杏仁状和流纹构造。当透长石和石英斑晶超过30%时称为斑流岩(nevadite)
...);T3sd—印支期花岗岩(Indosinian granite); βμ—辉绿玢岩(diabase- porphyrite);λπ—流纹斑岩(rhyolite porphyry); I、II、III—金矿体编号(numbers of gold orebodies);1—金矿体(gold ore body);2—砂金矿体(gold placer) 宽 4.5 m,...
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龙头山金矿床与燕山晚期流纹斑岩、角砾熔岩等次火山岩相有关。
The Longtoushan gold deposit is related to late Yanshanian subvolcanic rocks such as rhyolitic porphyry and breccia lava.
硅化、 绢云母化、绿泥石化流纹斑岩型金矿是本矿的主要金矿类型。
There is a close relationship of gold mineralization to silicification, sericitization and chloritization. The potential reserves of this deposit may exceed a large size gold deposit.
南梁岩体主要由斑状花岗岩、流纹斑岩、花斑岩及流纹质角砾熔岩组成。
Nanliang complex is mainly composed of porphyritic granite, granophyre, rhyolite - porphyry and rhyolitic agmatite-lava.
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