Kunshan molybdenum copper deposit belongs to quartz vein zone type of copper molybdenum deposit

ore-forming elements copper

molybdenum and tungsten are associated

alternate and overlapping each other often appear in the space

constitute a complex ore body. According to the study of the chemical characteristics of rocks show that the ω（Al

2

O

3

） content11.75%-17.93%

the average of

14.81%

higher than the average Chinese granite 14%

A/CNK area ratio 3.469%-1.604%

the average of 2.023%

A/CNK range 1.162%-3.272%

the average of 1.682%. ω（K

2

O）/ω（Na

2

O） content 1.076%-5.884%

the average 2.277%. Terman index value is 1.350%-2.953%

the results show that the rock mass is a high potassium calcium alkaline peraluminous granite. Original basaltic magma consolidation index ω（Si） as the crystallization differentiation

residual magma evolution in the direction of the lean MgO style

average from 2.544%-14.401%

reduce rapidly.Consolidation index falling rapidly

the lithology of the acid degree is higher. By taking advantage of the characteristics of the main elements to cast graph and analysis of the forming environment of granite can get into magmatic arc tectonic environment mainly for active continental margin and（or） island arc environment（Pacific area）

belongs to the type I granites.