sericite
4.GEOLOGICAL CHARACTERISTICS OF SERICITE DEPOSITS IN XILING,SONG COUNTY AND PRELIMINARY ANALYSIS OF ITS GENESIS
5.The geological characteristics of sericite deposits in Xiling, Song County have been introduced in this paper, and its mineral features have been first studied.
6.40 Ar / 39 Ar age of sericite altered rock from the Sawayaerdun shows that the main stage of gold mineralization occurred in the Triassic.
7.For thirty years, the institute has been engaged in geological prospecting for Alunite, illite, pyrite, bentonite, fluorite, phosphate rock,sericite etc, has completed and submitted more than 70 geological reports.
8.The age of altered sericite from Bajiazi gold deposit dated by 40Ar- 39Ar method is 203.975±527 Ma,which indicates the mineralization took place in Indosinian period of Archean Era.
9.Minerals or altered minerals such as sericite, biotite and K feldspar in the altered wallrocks are selected to be objects of age determination, and the Ar Ar, K Ar, Rb Sr, U Pb isochron dating methods are adopted.
