The Chah-Bagh gold occurrence is located in Muteh mining district, in the central part of the Sanandaj-Sirjan zone. Gold mineralization occurs in ductile to ductile-brittle shear zones and is comparable with orogenic gold deposits. Silicification and sulfidization are the most important hydrothermal alteration features in the inner parts of altered shear zones and coincide most closely with the...

I. INTRODUCTION Hyperspectral imaging from aerial and satellite based instruments is an increasingly common tool for the exploration and identification of key geological targets on the Earth and Mars. Hydrothermal environments are one such target of interest to both terrestrial and extra-terrestrial geologists. The Mars scientific community are especially interested in identifying regions of hy...

Abstraet--Smectite and fine-grained quartz were separated from 6 volcanic ash samples collected in Japan from Shinmoe-dake Volcano, southern Kyushu, and Mt. Usu Volcano, southern Hokkaido. Oxygen isotope ratios of smectite in the volcanic ash range from +6,9 to + 12.9 per mill (%o), which are comparable to the values of smectite (~lsO = +6.5 and +9.4%0) from currently active geothermal fields. ...

The lead-zinc-barium deposits of the southern Benue Trough, Nigeria belong to a suite clastic dominated fracture filling hydrothermal vein deposits. alteration types and spread are poorly known yet required aid exploration. Band ratio composites (BRC), Principal Component Analysis (PCA), Minimum Noise Fraction (MNF) were applied full scene Advanced Spaceborne Thermal Emission Reflection Radiome...