Depending on the field geological survey

petrographic methods

element chemical analysis and EPMA

it is found that white quartz almost has no other minerals

while green quartz contains a small amount of micro-particles of carbonate minerals

clay minerals

pyrite

hematite and other metallic minerals in the white - green quartz veins from Xiyangshan group of upper cambrian in Xiuwu easter. It has a strong fractionation between LREE and HREE

and mainly enriched in light rare earth. δEu is not abnormal

δCe is negative anomalies. In addition

quartz veins were caused by the two epithermal.