Lamprophyre is a class of hypabyssal vein rock

which is low content of Si O2 and is enriched with mafic

alkaline and volatile. From the previous studies

we can get the result that the lamprophyre forming in different times and tectonic setting has the similar litho-geochemical features: enrichment in large ion lithophile elements（LILE） and LREEs

depletion in high field strength elements（HFSE） and HREEs; the Sr-Nd isotope characterized by high（87Sr/86Sr） and low εNd（t）.Lamprophyre is a product of extensional tectonic environment

most scholars believe that the cause is related to partial melting of the enriched lithosphere mantle. It can be used as a research object to study the mantle enrichment

the assimilation and the magmatic mixing. Meanwhile

the lamprophyre is an important indicator of gold deposits.