the cheshmeh hafez polymetal deposit is located in troud – chahshirin mountain range in southeastern damghan. in this province, the volcanism and associated mineralization are closely related to major faults anjilo and troud with nw-se trend. the exposed rocks in the study area consist of volcano clastic sequence of sandstone, tuff, volcano breccias and mostly andesitic and andesitic- basalt fl...

nezam-abad area is located in southwest of shazand (arak) which is a part of sanandaj-sirjan zone. major intrusive rocks of nezam-abad are quartz diorite and minor amount of granodiorite. leucogranitic, pegmatite dykes and quartz-tourmaline veins were intruded the quartz diorite. quartz diorites are mainly composed of plagioclase, hornblende, biotite, quartz and pyroxene as major minerals. majo...

Abstract –– Tambang Sawah Area, Lebong Regency, Bengkulu Province, is geologically located in the Barisan mountains and Sumatra fault zone. The prospect of area lies physiography central Sumatran ranges composed by igneous rocks Sunda – Banda magmatic arc. This study aimed to understand deposit geology ore characteristics gold at area. Quartz vein mineralization occurred granite rock intruded i...

In the area SW of Arak, intrusives are emplaced into metasediments of early Mesozoic age. The intrusive rocks vary in morphology, structure and mineralogy, and exhibit various degrees of alterations; Rb-Sr geochronological data have been obtained to constrain their timing. There are three different groups of granitic rocks in the area: (a) the Astaneh intrusion, consisting of granite, biotite g...

Abstract Tasmania is the most important tin province in Australia, having been endowed with >0.65 Mt Sn. Some granitic intrusions western have distinctive tourmaline- and quartz-rich magmatic-hydrothermal features, whether they are mineralized (e.g., Heemskirk Granite) or barren (Pieman Heads Granite). The Devonian Pieman plutons crop out on coast of characterized by similar mineralogica...

The Mesozoic Xuefengshan Orogen (XFSO) in South China hosts abundant gold ore deposits. XFSO records a history of polyphase tectonic deformation and the structural controls on mineralization are poorly understood. recently discovered quartz-vein type Huanggou deposit southern is characterized by multiple stages represents an excellent natural laboratory for deciphering complex orogenic belt. A ...

Sar-Kuh porphyry copper deposit is located 6 km southwest of the Sar-Cheshmeh copper mine, Kerman Province, Iran. Based on field geology, petrography and fluid inclusions studies, four alteration types have been identified in the Sar-Kuh area. Early hydrothermal alteration formed a potassic zone in the central parts of Mamzar granite/grano-diorite stock and propylitic alteration in its peripher...

To study the characteristics and genetic constraints on alkalic-type epithermal Au mineralisation, here we use example of Tuvatu Au-Ag deposit in Fiji, with an emphasis detailed, quantitative mineralogy. mineralisation is hosted a weakly altered potassic monzonite parallel sided-veins K-feldspar, biotite, sericite, calcite, quartz, epidote-bearing propylitic or sericite-rich selvages. Petrograp...