Preliminary Study Of Mineralization Potentiality Of Shiziling Muscovite Granite,Jiangxi Province

Recent work found that,the potential of rare element metallogenic of Yifeng area was strong.In this paper,study the petrography and in-situ mineralogy on the basis of field work,observation with microscope,experimental analysis of Shizhiling granite,and analysis the metallogenic potential of rare element in Shizhiling granite.Meanwhile,with the learning from previous research,author summary and analysis the petrogenesis and mineralization of Shizhiling granite.Conclusions as follow:The rare element mineralization of Shizhiling granite is mainly embody in the mineralization of Shizhiling muscovite granite.The Shizhiling muscovite granite is peraluminous and high differentiation intraplate alkaline granite.The mineral contents of Shizhiling granite includes albite,Li-muscovite,amblygonite etc,accessory mineral includes cassiterite,niobium-tantalum mineral,topaz etc,for which these minerals are usually exist in the late-period of magma diferentiation.Its whole-rock elements data shows that SiO₂,Al₂O₃,P₂O₅ are higher value and lower value of Fe O,Fe₂O₃.Rare-earth distribution curve show the characteristic of tetrad effects and depletion of Eu.Element Li,Rb and Cs enrich in the value with the generalvalue of Nb,Ta.The ratios of Nb/Ta-Zr/Hf is low and 10000Ca/Al is high,indicate that the magmatic evolution of Shizhiling granite is highLi-muscovite is enrichment of Li,Rb,Cs,and Li is positive correlation with Rb,Cs.Meanwhile,the Li,Rb,Cs bearing in the Li-muscovite are positive correlation with the Li,Rb,Cs bearing in the Shizhiling granite,which indicate Li-muscovite is the mainly ore-bear mineral.Li is positve with SiO₂/Al₂O₃ and negative with K₂O/Al₂O₃ in the LA-ICP-MS data of mica,considering about the ideal mineral expression that the competition of lattive position exit between Li and Al,indicate that Al in the mica is not benefit for the enrichmengt of Li.Compare with Shizhiling muscovite granite and Yashan granite?which has more advance work?.They are similar in the total mass geochemical characteristics,mineral composition and chronology character.Suggest that those working method in Yashan granite also meanful to Shizhiling granite?Ganfang granite?.In the characteristic of mineralization,Yashan granite shows more enrichment of Nb,Ta while Li,Rb,Cs enrich in the Shizhiling granite.The reason probably is that Yashan granite with more rich of F and more degree of oxidation depend on the differential of fluoritization?more strong in Yashan granite?.The NE trend Yifeng-Jingdezhen fault and Pingxiang-Guangfeng nappe structure provides migration pathway of ore-and rock-forming of the Ganfang granite and Yashan granite on the area.And the mineralization is mainly relate with the magmatic evolution and self alternation,which has little conection with fault.Shizhiling muscovite granite is the most enrichment part of Li,Rb,Cs in Ganfang granite,Yifeng area,which has great rare element metallogenic potential.The relative geology work of Shizhiling granite still need.The author believe that with more work will be done,more discovery would find.