The determinative characteristics of common rock forming minerals containing quartz group , feldspar group , mica group , hornblende group , pyroxene group , olivine group and carbonatite minerals will be discussed in greater detail 对常见造岩矿物,如石英类、长石类、云母类、角闪石类、辉石类、橄榄石类、碳酸盐类矿物的鉴定特征将予以详细的说明。
4.
The distinctive shimmer of the rocks and their marble - size crystals of red garnet , black hornblende and sage - green diopside in most places attest to metamorphic tortures nearly as intense as those experienced at akilia 伊苏瓦岩石的许多特徵，如特殊的光泽与弹珠大小的各式结晶，包括红色的石榴石、黑色的角闪石、鼠尾草般绿色的透辉石等，在在说明它经历的变质作用几乎与阿基利亚岩石一样强烈。
5.
The mafic dikes also formed by the partial melting of enriched mantle , include gabbro , diabase ( distributing mainly in luxi ) and lamprophyres ( camptovogesite , odinite and hornblende lamprophyres ) ( mainly in ludong ) . for all the rocks , crustal contamination was absent when magma emplaced . 2 基性脉岩主要包括辉长岩、辉绿岩(主要分布在鲁西地区)和煌斑岩(以斜闪煌斑岩为主，同时含部分拉辉煌斑岩和角闪煌斑岩) (主要分布在鲁东地区) ，都为富集岩石圈地幔部分熔融的产物。
6.
The qiongzhong and danxian batholiths , as the largest early mesozoic syntectonic granite intrusions in hainan island , are mainly composed of porphyritic biotite two - feldspars granitoids , in which alkali - feldspar phenocrysts and dark minerals are foliated mostly in we - direction . the granites are of metaluminous i - type . major and trace elements show co - variations with sio2 , suggesting the fractional crystallization of plagioclase , hornblende , apatite and ti - fe oxides in the evolution of the granites 花岗岩的主量元素和部分微量元素成分与sio _ 2呈良好的相关关系，显示出明显的斜长石、角闪石、磷灰石和ti - fe氧化物等的分离结晶作用，总体上它们与大陆岛弧花岗岩的微量元素丰度和分布特征相似，系统地亏损ba 、 nb 、 sr 、 p和ti等元素。
