Results 281 to 290 of about 2,041,224 (354)

Lode Gold Deposits

2020
Gold mineralization potential of Mongolia has been studied since the 1900s, and small-scale mining activities have been known in the Northern Khentii metallogenic zone of Mongolia. Based on joint Mongolian-Russian, Mongolian-Japanese, and European gold explorers, seven metallogenic belts are recognized: (1) Mongol-Altai, (2) Nuur, (3) Northern Mongolia,
Gunchin Dejidmaa, Uyanga Bold
openaire   +1 more source

Magmatic-Hydrothermal Origin of Mercury in Carlin-style and Epithermal Gold Deposits in China: Evidence from Mercury Stable Isotopes

ACS Earth and Space Chemistry, 2019
Carlin-style (sediment-hosted, “invisible” gold) and epithermal gold deposits are commonly enriched in mercury (Hg), but the source of this metal is not well-known.
R. Yin, Changzhou Deng, B. Lehmann, Guangyi Sun, Ryan F. Lepak, J. Hurley, Chenghai Zhao, Guiwen Xu, Qinping Tan, Zhuojun Xie, R. Hu   +10 more
semanticscholar   +1 more source

Electrolytic Gold Deposition on Dodecanethiol-Modified Gold Films

Langmuir, 2009
The electrochemical nucleation and growth of Au from a Au sulfite electrolyte onto dodecanethiol-modified Au surfaces is investigated by a combination of microscopy and chronoamperometry methods. The self-assembled dodecanethiol monolayers are continuous but exhibit defects in correspondence of the Au grain boundaries and on top of Au terraces ...
Gyana, Pattanaik, Wenbo, Shao, Nathan, Swami, Giovanni, Zangari   +3 more
openaire   +2 more sources

Studies of hydrothermal gold deposition - (pt.) 1, carlin gold deposit, nevada, the role of carbonaceous materials in gold deposition

Economic Geology, 1970
Studies of fresh carbonate host rocks and unoxidized gold ores of the Carlin mine indicate that gold, quartz, barite, pyrite, and other sulfides were introduced into the Roberts Mountains Formation by acid hydrothermal solutions. Laboratory investigations on the carbonaceous materials in the host rocks and ores and studies of reactions between ...
Arthur S. Radtke, Bernard J. Scheiner
openaire   +1 more source

Immersion Deposition of Gold

Transactions of the IMF, 1996
A uniform, bright, high purity gold deposit can be obtained by using a dip gold plating process, characterized by high bath stability. The properties of the deposit have been examined by SEM, SRD and XPS.
Han Keping, Fang Jingli
openaire   +1 more source

Metallogenetic model of Jiaodong-type gold deposits, eastern China

Science China. Earth Sciences, 2023
Jun Deng, Qingfei Wang, Liang Zhang, Shengchao Xue, Xuefei Liu, L. Yang, Li‐Qiang Yang, Kun-Feng Qiu, Yayun Liang   +8 more
semanticscholar   +1 more source

Texture and geochemistry of pyrite from the Jinya, Nakuang and Gaolong gold deposits in the Youjiang Basin: implications for basin-scale gold mineralization

Mineralium Deposita, 2022
L. Yang, Qingfei Wang, R. Large, D. Fougerouse, Indrani Mukherjee, Qizuan Zhang, Jun Deng   +6 more
semanticscholar   +1 more source

Laser-induced deposition of gold

AIP Conference Proceedings, 1986
AbstractThe laser-induced, vapor-phase deposition of gold metal from dimethyl-(2,4-pentanedionato) gold (III) and two fluorinated derivatives was examined by both photopyrolytic (LCVD) and photochemical modes of decomposition. High purity gold deposits are formed by LCVD with the rates of deposition being extremely vapor pressure dependent and thus ...
openaire   +1 more source

The big mantle wedge and decratonic gold deposits

Science China. Earth Sciences, 2021
R. Zhu, Wei-dong Sun
semanticscholar   +1 more source

The deposition of gold

Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1974
Summary It is shown that in the case of Au deposition from CN− solution slow surface area changes take place which can be observed by potentiostatic pulse and a.c. impedance methods. The mechanism of incorporation of CN into the Au deposit is briefly discussed.
I.R. Burrows, J.A. Harrison, J. Thompson
openaire   +1 more source