Results 231 to 240 of about 1,914,211 (292)

Multivariate statistical analysis of trace element compositions of native gold from orogenic gold deposits: Implication for mineral exploration

Ore Geology Reviews, 2021
The mineralogy and chemical composition of native gold from twenty-seven representative orogenic gold deposits were investigated using optical microscopy, electron probe microanalysis (EPMA), and laser ablation-inductively coupled plasma-mass ...
Xiao-Wen Huang, Sheida Makvandi, Georges Beaudoin   +2 more
exaly   +2 more sources

Native Gold in the Chudnoe Au-Pd-REE Deposit (Subpolar Urals, Russia): Composition, Minerals in Intergrowth and Genesis

Minerals (Basel, Switzerland), 2021
Composition of native gold and minerals in intergrowth of the Chudnoe Au-Pd-REE deposit (Subpolar Urals, Russia) was studied using optical microscopy, scanning electron microscopy, and electron microprobe analysis. Five varieties of native gold have been
Nikolay Karmanov, Galina Palyanova, Borovikov Andrey   +2 more
exaly   +2 more sources

Forms of Gold and Some Typomorphic Characteristics of Native Gold of the Pavlik Orogenic Deposit (Magadan Oblast)

Geology of Ore Deposits, 2021
N V Sidorova, Sidorova N V, Grigorieva A V   +2 more
exaly   +2 more sources

Magmatic Native Gold: Composition, Texture, Genesis, and Evolution in the Earth’s Crust

Russian Geology and Geophysics, 2023
––Here we report results of microforms’ studies of native gold and its alloys in igneous rocks, modified to varying degrees by secondary processes. We discuss the composition and occurrence of both the deep-seated magmatic gold-bearing alloys and the ...
N. Berdnikov, P. Kepezhinskas, V. Nevstruyev, V. Krutikova, N. Konovalova   +4 more
semanticscholar   +1 more source

Geochemical signatures in native gold derived from Au-bearing ore deposits

, 2021
Native gold is a significant indicator mineral for Au-bearing deposits. The chemical composition of gold in diverse geological settings is a function of fluid composition under various physicochemical conditions.
Haiming Liu, G. Beaudoin
semanticscholar   +1 more source

Trace element distributions in (Cu)-Pb-Sb sulfosalts from the Gutaishan Au-Sb deposit, South China: Implications for formation of high fineness native gold

American Mineralogist, 2019
Compositional data, comprising electron probe microanalysis and laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) trace-element data, are presented for common (Cu)-Pb-Sb sulfosalts (bournonite, jamesonite, tetrahedrite, and ...
Cristiana Ciobanu, Guiqing Xie, Nigel Cook   +2 more
exaly   +2 more sources

Contrasting Surficial Composition of Native Gold from Two Different Types of Gold Ore Deposits

Minerals (Basel, Switzerland), 2017
Native gold grains sampled at two different gold ore deposits in Eastern Russia have been studied by the techniques of electron spectroscopy (X-ray photoelectron spectroscopy (XPS) and Auger electron spectroscopy (AES)), electron microprobe analysis ...
Sergey Lipko, Vladimir L Tauson, Raisa Kravtsova   +2 more
exaly   +2 more sources

Hydrocarbons in Fluid Inclusions from Native Gold, Pyrite, and Quartz of the Sovetskoe Deposit (Yenisei Ridge, Russia) According to Pyrolysis-Free Gas Chromatography-Mass Spectrometry Data

, 2020
––The first results on the composition of fluids from native gold and associated pyrite and quartz have been obtained. Despite the small amount of analytical data, these results are of scientific and practical interest.
T. Bul’bak, A. Tomilenko, N. Gibsher, A. M. Sazonov, E. Shaparenko, M. Ryabukha, M. Khomenko, S. A. Sil’yanov, N. Nekrasova   +8 more
semanticscholar   +1 more source

Native gold from the Kamenka-Barabanovsky and Kharuzovka alluvial placers (Northwest Salair Ridge, Western Siberia, Russia): Typomorphic features and possible bedrock sources

, 2020
Northwest Salair Ridge, is one of the oldest alluvial gold mining regions; it is located in the western part of the Altai-Sayan folded area. The placers localized along the Kharuzovka and Kamenka-Barabanovsky creeks (the right-branch of the Suenga River)
P. A. Fominykh, P. Nevolko, T. Svetlitskaya, V. Kolpakov   +3 more
semanticscholar   +1 more source

U-Th-He dating of native gold: First results, problems, and outlooks

Petrology, 2014
Olga Yakubovich, B M Gorokhovskii, Kotov A B   +2 more
exaly   +2 more sources