Writers : Shafiei.B & Shahabpour.J and Sadloo5.M
Refference : Geosciences Scientific Quarterly Journal,No.:33-34,P.:34
Publishing Year : 1380

Abstract :
The Sat Ctieshmeh porphyry copper deposit it located in the southeastern part of the central IranIan tsetono - magmatic belt, in Kerman province. This deposit has a sulfide ore reserve of 1200 million tonnes, and contains an average grade of 0.7% copper and 0.03% molybdenum.
Based on this study, the actual average gold and silver grades are respectively 0.04 g/t and 0.97 g/t. The highest gold and silver gradet occur in the intense philic ! argillic Sar Cheshmeh stock and also in the intense biotitic andesite, and have the same distribution as the hig! hypogene copper grade.
The strong positive correlation between Au and Cu (r= 0.7), Au and Ag (r=0.6) and Ag and Cu (r= 0.5), indicates similar condition o formation, and co-precipitation of gold and silver with copper in the form of invisible grains, solid solution in the chalcopyrite and probablE presence of a visible gold and silver in the form of electrum or Ag poor native gold.
According to the genetic model proposed here, unlike copper, the hypogene gold and silver mineralization is not limited to a particula hydrothermal . alteration process. Perhaps during evolution of the porphyry system, deposition of Au and Ag gradually increased, and in thE final stages, Au and Ag appeared in the form of epithermal veins. This study indicates that the Sar Cheshmeh deposit is a gold- poo porphyry copper deposit, and some clear particulars like: huge tonnage, classic morphology, the scarcity of magnetite in the potassi! alteration zone (0.4%), and the high grade of molybdenum, introduce this deposit as a perfect type - example of a PCD-Mo, which is relate to the calc- alkaline magmatism in continental maroin settinci.
Subject List : Copper