对岩浆岩手标本的识别:主要侧重对矿物的识别,因为岩石是由各种矿物组成的,通常组成岩石常见的矿物有:橄榄石、辉石、角闪石、长石、石英、云母等。这些矿物在不同的岩石中含量各异,故在识别时,就要注意各种矿物在岩石中含量多少,再结合岩石的特殊结构、构造进行命名。深成岩的识别:深成岩的区别主要看矿物成分的 Identification of magmatic rocks hand specimens: the main focus on the identification of minerals, because the rock is composed of a variety of minerals, usually composed of rock minerals are: olivine, pyroxene, amphibole, feldspar, quartz, mica and so on. These minerals have different contents in different rocks. Therefore, when identifying, it is necessary to pay attention to the content of various minerals in the rock, and then combine the special structure and structure of the rock to name it. Identification of deep plutons: The difference between deep plutons mainly depends on the mineral composition