نتایج جستجو برای: primary gold mineralization

تعداد نتایج: 732825  

Journal: :زمین شناسی اقتصادی 0
آرش گورابجیری پور محسن مباشری

introduction the mahour exploration area is a polymetallic system containing copper, zinc and silver. the mineralization can be seen in two forms of veins and disseminations. this area is structurally within the lut block, west of deh-salm village. recent exploration work and studies carried out by geologists on this volcanic-plutonic area of lut demonstate its importance indicating new reserve...

Journal: :International Journal of Current Science Research and Review 2022

The productive mineralization of the Sheikhdzheili-Zengiboba area is associated with metamorphogenic transformations rocks Urusai, Karauzyak, Kuyanchik, Sheikhdzheili suites, metamorphosed under conditions green schist facies. mineralized zones site are confined to narrow faults in tectonic northeast and northwest directions. main form manifestation gold-bearing small steeply dipping veins, len...

Journal: :Geology 2022

Abstract The western North American Great Basin's Carlin-type deposits represent the largest accumulation of gold in Northern Hemisphere. controversy over their origins echoes debate between Neptunists and Plutonists at birth modern geology: were causative processes meteoric or magmatic? Sulfur isotopes have long been considered key to decoding metal cycling Earth's crust, but previous studies ...

2003
Filippo Ferri

The area underlain by the Barkerville Terrane has an important exploration and mining history dating from the discovery of placer gold on Keithley Creek in 1860. Placer gold production peaked in the 1860s, but continues at a modest scale to the present time. Lode gold production came mainly from the Wells mining camp, located near some of the richest placer streams in the district, between 1933...

Journal: :Kurvatek: Journal Technology of Civic, Electrical, Mechanical, Geology, Minning and Urban Design 2022

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...

Journal: :Chemical communications 2010
Hiroshi Kominami Atsuhiro Tanaka Keiji Hashimoto

Gold nanoparticles supported on cerium(IV) oxide powder showed strong absorption at around 550 nm due to localized surface plasmon resonance of Au and exhibited a higher level of activity than other Au-supporting samples in mineralization of organic acids in aqueous suspensions under irradiation of visible light (> ca. 520 nm).

Dolatshahi, Somayeh, Karimzadeh Somarin, Alireza, Zamanian, hasan,

The Rangraz area is located about 20 km north of Saveh, which is situated in the central part of Uromieh–Dokhtar magmatic arc. The exposed rocks in the study area consist of a volcanic and volcanoclastic subvolcanic dikes and quartz monzodiorite intrusions. Mineralization in this area is mostly related to the silicic, argillic and chloritization alteration assemblages. The Rangraz area consists...

قاسم‌زاده, فرشته, ملک‌زاده شفارودی, آزاده ,

Cheshmeh-Zard Au-As-Sb mining area is located in south west of Nyshabour. Twenty one samples were collected from vein mineralization, stream sediments and agricultural land, as well as seven samples from drinking and spring waters from Arghash and Hassanabad villages. Based on high level of arsenic and antimony contamination, two areas were recognized in vein mineralization and surrounding drai...

Journal: :Zapiski Gornogo instituta 2021

The paper presents the results of comprehensive isotope geochemical (Re-Os, Pb and ?34S) study sulfide mineralization Morozkinskoye deposit. ore zones deposit are localized in syenite massif Mount Rudnaya, which is located within Central Aldan region (southern Yakutia). Gold represented by vein-disseminated or vein type manifested acidic low-temperature metasomatites – beresites (Qz-Ser-Ank-Py)...

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