porphyritic
1.Metamorphic rock having porphyritic texture.
2.A conspicuous, usually large, crystal embedded in porphyritic igneous rock.
3.The fine-grained crystalline base of porphyritic rock in which larger crystals are embedded.
4.Theearly stage comprises fine grain adamellite and medium coarse grained porphyritic adamel-lite,while the late stage, it consists of medium grain adamellite with huge phenocryst.
5.There are large quantities of fine-grained,porphyritic dioritic enclosures in the Shimen rockbody,southeastern part of Antu County,Jilin Province Through the study on the form of the enclosures,mode of occurrence,characteristic,texture,mineralogical composition and mineral growth habit,it is preliminarily definited that the Shimen magma is at least composed of the acidic and basic magma in a complete uncrystallized state,and proposed for the first time that the rockbody has some characteristics of the migmatitic granite,belonging to mixed magmatic granite
6.The Chifengshan gold-polymetallic deposit is located in the Beishan polymetallic mineralization belt. There are 114 gold-polymetallic veins in the area, among them 19 are gold veins and auriferous veins, they occurred in the marble of Jixian System Pingdingshan Group which located in the north contact zone between biotite adamellite rock body and porphyritic granodiorite stock of Later Variscan, and controlled by the contact zone skarnization belt and EW, NE, NW and NNW strike fault.
