All hornblendes are calcareous hornblendes are poor in Al, rich in Mg and low ( Na+ K)_A and were crystallized from magma or formed through metasomatic crystallization; 角闪石均为钙质角闪石类,既有岩浆成因角闪石,也有次生交代成因角闪石,以相对贫铝、富镁、(Na+K)A低为显著特点。
The 40Ar/ 39Ar dating of hornblendes and biotites from eight intrusives is made. 对其中8个侵入杂岩体中的角闪石和黑云母进行了40Ar/39Ar定年研究。
Shale, rough grave, ironstone, hornblendes, were selected for the packing of constructed wetland to carry out the researches on effect of sewage purification in lab by different substances. 选取页岩、粗砾石、铁矿石、麦饭石及其组合作为人工湿地填料,进行不同基质室内小试污水净化效果研究。
Through systematic study of compositions of hornblendes, plagioclases, alkali feldspars, apatites and biotites from granitoids in Eastern Tianshan Mountains, Xinjiang China, it is determined that the granitoids crystallized at the depth of 11& 17 km; 通过对新疆东天山花岗岩类岩石中的角闪石、斜长石、碱性长石、磷灰石、黑云母成分的系统研究,确定花岗岩类岩石在11&17km深处结晶;