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一、产状 石英是该区最主要的脉石矿物,与金矿化有密切的成因关系,按产出位置及相互穿插关系,可分为三个世代。 第一世代石英(石英Ⅰ):是黄铁绢云岩化近矿围岩蚀变带中的细小石英脉,无一定方向性,脉长一般2—5cm。石英晶粒细小,粒径0.05—0.5mm,常含有斜长石及绢云母鳞片的交代残体。微小晶洞内常有石英晶簇充填。自然金、五角十二面体黄铁矿,草莓球状白铁矿常与该世代石英伴生(照片1)。 第二世代石英(石英Ⅱ):为浅灰白色细粒致密石英,赋存在斑岩体硅化-绢云母化及
First, the occurrence of quartz is the most important gangue minerals in the area, and gold mineralization has a close genetic relationship, according to the output location and interwoven relationship, can be divided into three generations. The first generation of quartz (Quartz Ⅰ): is a small quartz vein in the alteration zone of pyrite-type serpentinite near ore, without directional, pulse length is generally 2-5cm. Quartz small grains, size 0.05-0.5mm, often containing plagioclase and sericite flake confessed remnants. Quartz crystal cluster filled in tiny crystal cave. Natural gold, pentagonal dodecahedral pyrite, and strawberry globular white iron are often associated with this generation of quartz (photo 1). Second-generation quartz (quartz II): light gray-white fine-grained compact quartz, presence of porphyry silicification - sericitization and