TITLE:
Fluid Inclusion Studies on Quartz Veinlets at the Ali Javad Porphyry Copper (Gold) Deposit, Arasbaran, Northwestern Iran
AUTHORS:
Behzad Hajalilou, Mehraj Aghazadeh
KEYWORDS:
Fluid Inclusion, Silica Veinlet, Porphyry Copper Deposit, Ali Javad, Arasbaran, Iran
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.4 No.6,
June
14,
2016
ABSTRACT: Ali Javad
porphyry copper-gold deposit is located in Arasbaran porphyry copper belt at
northwestern Iran, some 20 km east of Sungun Mine. Porphyry mineralization at
the Ali Javad deposit occurred in post-Oligocene quartz monzonite bodies which intruded
in the Eocene volcanic rocks. Mineralization occurred as veins, veinlets and
dissemination both as hypogene and supergene type. Several types of veinlets
were distinguished during the study of the deposit. Fluid inclusion studies on
fluids trapped in quartz which were taken from drill core samples indicated a
wide range of homogenization temperature in the veinlets from 138°C to 565°C
which their salinity demonstrated 33 - 61 wt% NaCl equivalent. Mineralizing
fluids density at the deposit was 0.8 - 1.2 g/cm3. Fluid inclusion
studies suggested that Ali Javad deposit is an Au-rich porphyry copper deposit;
its fluid inclusion features were comparable with other porphyry deposits.