Poster Number 51
See more from this Division: General Discipline Sessions
See more from this Session: Mineralogy/Crystallography; Petrology, Experimental; Igneous; Metamorphic (Posters)
Abstract:
The fracturs of metamorphose rocks filled by volcanic dacitic rocks in Neogen.
The amount of Cu in dacitic rocks far from intrusive body is normal average (47& 34 ppm) but it reaches to 6794 ppm, near the intrusive body. Malachite, azurite and chrysocolla, observed on the surface of dacitic rocks also propylitic alteration has spread inside them and considering of Cu amounts seems to be related of absence supergene enrichment. Eruption of Neogene dacitic meanwhile the supergene zone, bring out the metal bearing minerals especially copper and Fe oxids and has destroyed The supergene enrichment.
Also it caused the potasic zone disapear upward and poropylitic alteration expend in volcanic rocks. phylic and argilic alteration spread over a large area and Cu mineralization appear on them. Chalcopyrite have been found as essential mineral of Cu.
See more from this Division: General Discipline Sessions
See more from this Session: Mineralogy/Crystallography; Petrology, Experimental; Igneous; Metamorphic (Posters)