In dicussed Danchi metallogenic belt in granitic magma activity characteristics

based on the use of mineral deposits

petrology

petrogeochemistry research methods analysis of metallogenic belt in ore field and ore deposits

ore body and wall rock features. Discussed metallogenic belt（Dachang

Mangchang

Beixiang and Wuwei ore field） granite geochemical characteristics. The research show that granite with high silicon

alkali

A/CNK is 1.1-3.4

belong to peraluminous granite

Alkalinity rate is 1.50-3.55

belong to calc-alkaline series. ω（K

2

O）>ω（Na

2

O）

indicated that in magma activity period

the crustal evolution in the area has ente

red a relatively mature continental crust stage of development;In primitive mantle standardization trace elements spider diagram

large ion lithophile elements Rb

Th

U enrichment

Ba

Nd

Sr elements depleted. The chondrite-normalized patterns performance is obviously the right deviation. The content and the ratio characteristics of major elements and trace elements show that granite from high maturity of continental crust substance.