Content Characteristics of Impurity Elements Analysis and Evaluation Method Discussion of High-purity Quartz Raw Material of the Granite Pegmatite Type in Tangyin,Jiangxi Province
Granite pegmatite is an important source for raw material selection of high purity quartz,but evaluation of this type of high purity quartz is still in the exploratory stage.Based on this,the contents and occurrence of quartz mineral impurity elements in the granite pegmatite from Tangyin mining area of Jiangxi province were stud-ied by petrography,chemical composition and in-situ micro-area testing analysis of quartz,in order to provide a basis for the establishment of evaluation system on high-purity quartz raw material from granite pegmatite.The re-search results show that,the inclusions in quartz of Tangyin granite pegmatite are mainly gas-liquid phase,mainly distributed in bands,groups and lines,with a small amount of scattered distribution,which is conducive to re-moval in the purification process.The trace elements in quartz of Tangyin granite pegmatite are mainly Al,Ti,Ca,P,Li and Na,with a small amount of K,Ge,B and Fe.The total amount of impurity elements(∑total)ranged from 100.40 × 10-6 to 408.61 × 106(average content of 202.84 × 10-6),and the sum of the elemental contents of Al,Li,and Ti(∑ Al+Li+Ti)ranged from 80.15 × 10-6 to 327.94 × 10-6(average content of 151.09× 10-6).The ∑Al+Li+Ti in the quartz lattice of Tangyin granite pegmatite is lower than 100 × 10-6.The results show that the quartz of Tangyin granite pegmatite has good purificability,and the content of SiO2 after purification can reach up to 99.99％.
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维普
