某地的花崗伟晶岩体是分布在橄欖岩、輝石岩、輝长岩及閃长岩中。在大約三平方公里的面积內,共計約几百条伟晶岩脉,其密度很不均匀,在小范围內多成群出現。伟晶岩脉长度大部分在150—250米之間,少数岩脉可延长至400米以上;大部分岩脉厚度 The granitic pegmatites in some places are distributed in peridotites, pyroxenes, gabbro and diorites. In about three square kilometers of area, a total of about hundreds of pegmatites, its density is very uneven, in small groups within the group. Most pegmatite veins are between 150 and 250 meters in length, and a few veins can be extended to over 400 meters. Most of the dikes