نتایج جستجو برای: primary gold mineralization
تعداد نتایج: 732825 فیلتر نتایج به سال:
Hassan Abad Au-Sb prospect area is located in north of Khorasan Razavi Province about 45 km souht of Neyshabour. Volcanic rocks (rhyolite, rhyodacite, trachyandesite and andesitic-basalt) and sub-volcanic intrusive (Eocene-Oligocene) such as biotite diorite porphyry, biotite hornblende diorite porphyry, hornblende monzonite porphyry, biotite micogranite, micogranodiorite, and granodiorite were ...
Tarikdarreh prospect area is situated in northeastern Iran at the boundary between Central Iran and Kopet-Dagh structural zones. Torbat-e-Jam granitoid intrusion of Triassic age is the main magmatic display in the district. These plutonic rocks with NW-SE trending intruded Miankouhi Formation (Upper Triassic) consisting of coaly shale, siltstone and sandstone converting those to hornfels for te...
Gold is typically transported by mafic and evolved magmas into the upper crust to be deposited in shallow oxidized porphyry epithermal environments. However, magmatic behavior of gold still poorly understood warrants further attention. Additional insights evolution other noble metals can provided investigations primitive convergent zone products their differentiation that contain primary-textur...
Tourmaline-bearing quartz veins and replacement deposits, commonly copperand gold-bearing, are found in unusual concentration in northwestern Nevada and adjacent northeastern California in Triassic and Jurassic arc rocks and in the Cretaceous plutons that intrude them. Mines and prospects that exploit the tourmaline-bearing deposits are found in a zone approximately 70 miles long and 50 miles w...
. Introduction In 1988, closely spaced samples of glacial sediments were collected around known gold mineralization in the Turquetil-Maguse Lake region of southern District of Keewatin. As part of this project, several thousand archived samples, from both detailed and regional drift sampling programs carried out between 1970 and 1975 in the same region, were reanalyzed for a wide range of eleme...
INTRODUCTION Calcium hydroxide has been extensively used as the gold standard for direct pulp capping in clinical dentistry. It induces proliferation, migration, and mineralization in dental pulp stem cells (DPSCs), but the underlying mechanisms are still unclear. The aim of this study was to investigate the role of the mitogen-activated protein (MAP) kinase pathway in calcium hydroxide-induced...
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