The affecting factors of low value by activation energy determination include heating duration in low temperature stage, pureness of Kfeldspar and mixture of some plagioclase, quartz et al.
导致活化能取值偏低的影响因素包括低温阶段的加热时间、K-长石的纯度和部分斜长石、石英的混入等。
2
Early Yanshanian intrusions are mainly adamellite, biotite K-feldspar granite with small amount of granodiorite.
燕山早期侵入岩以二长花岗岩、黑云钾长花岗岩为主，其次为花岗闪长岩。
3
The ore mineral assemblage of Dayishan wollastonite deposit is complex being composed of wollastonite, diopside, idocrase, k-feldspar, albite, calcite and quartz.