Results 41 to 50 of about 179,064 (175)

Replacement of Ores Recorded by Textures and Chemical Compositions of Sphalerite: An Example From the Furutobe Kuroko Deposit, Akita, Japan

Geological Journal, EarlyView.
Coupled dissolution‐reprecipitation of early formed Cd‐, Fe‐, Ag‐ and Sb‐poor sphalerite through interaction with high‐temperature and high‐sulphur fugacity Cu‐rich fluids, responsible for the formation of the yellow ores, resulted in the formation of Cd‐, Fe‐, Ag‐ and Sb‐rich, heavily chalcopyrite‐diseased sphalerite and enrichment of critical metals ...
Manuel Nopeia, Ryohei Takahashi, Andrea Agangi, Pearlyn Manalo, Hinako Sato   +4 more
wiley   +1 more source

Elemental Geochemical Analysis for the Gold–Antimony Segregation in the Gutaishan Deposit: Insights from Stibnite and Pyrite

Geosciences
In many gold–antimony deposits throughout the world, the sequence of Au and Sb precipitation varies significantly. In high-temperature systems such as hydrothermal Au deposits, gold typically precipitates prior to antimony, whereas in lower-temperature ...
Shiyi Lu, Yongyun Ning, Liang Xiao, Ke Huang, Siqi Chen, Xuan Zhu, Hao He, Miao Yu   +7 more
doaj   +1 more source

Notable Impact of Paleotectonic Stress on Gold Mineralisation in the West Qinling Orogen

Geological Journal, EarlyView.
By applying fuzzy clustering and multiple inverse methods, we systematically processed the data of vein and fault slip in this ore deposit to reveal the transition of orogenic geological environment and paleotectonic stress field. Our research results show two different stress states: the northwest–southeast extensional stress field and the northeast ...
Hongyan Wang, Aibing Chen, Jian Yang, Yuan Zhang   +3 more
wiley   +1 more source

MARKERS OF BIOGEOCHEMICAL MONITORING IN THE SULPHIDE ORES TAILINGS AREA

Известия Томского политехнического университета: Инжиниринг георесурсов, 2020
Relevance. Sulfide mining tailings as a source of chemical element pollution of the environment are a significant risk to household water use and public health.
Viktor V. Turbinskiy, Svetlana B. Bortnikova, Natalya G. Nikiforova, Alexandr S. Ogudov, Roman I. Aizman, Tatyana V. Korneeva, Sergey Yu. Franovsky   +6 more
doaj   +1 more source

Geochemistry and Geochronology of Magmatic Rocks in Southwestern and Northeastern Cambodia: Implications for the Tectonic Evolution and Metallogenesis of the Loei Fold Belt

Geological Journal, EarlyView.
The composition of intrusive rocks suggests that the magma was likely generated in a subduction‐related setting. The arc crustal thickness in the Phnom Sro Ngam and Halo Prospects was probably < 40 km during emplacement. Zircon U–Pb age range indicates a correlation with Loei Fold Belt magmatic activity.
Sirisokha Seang, Khin Zaw, Kakda Kret, Ivan Belousov, Kotaro Yonezu, Koichiro Watanabe, Charles Makoundi   +6 more
wiley   +1 more source

Chinese resource security policies and the restructuring of the Asia-Pacific iron ore market [PDF]

, 2012
This paper reviews the restructuring of the Asia-Pacific iron ore market in the wake of the rise of the Chinese steel industry. Prior to the 2000s, this market was characterised by two key features-high firm-level concentration on both the producer and ...
Wilson, J.D.
core  

Investigation into the photosensitivity of germanium-free antimony co-doped alumino-silicate optical fibres

, 2004
Photosensitivity of different concentrations of antimony (Sb) codoped alumino-silicate optical fibres are analysed. Bragg gratings with index modulations of ~3 x 10-4 are reported.
Voo, N.Y., Mokhtar, M.R., Ibsen, M., Sahu, J.K., Payne, D.N.   +4 more
core   +1 more source

Environmental and Health Risk Assessment Due to Potentially Toxic Elements in Soil near Former Antimony Mine in Western Serbia

Land, 2023
Background: Anthropogenic activities have clearly affected the environment, with irreversible and destructive consequences. Mining activities have a significant negative impact, primarily on soil, and then on human health.
Snežana Belanović Simić, Predrag Miljković, Aleksandar Baumgertel, Sara Lukić, Janko Ljubičić, Dragan Čakmak   +5 more
doaj   +1 more source

Hydrogen Analyses of FSW Cu‐OFP Tested Under Creep Conditions in Sulphide Containing Environment

Materials and Corrosion, EarlyView.
Friction stir welded Cu‐OFP exhibits elevated creep rates in sulphide‐containing aqueous environments, with creep increasing as sulphide concentration rises. Hydrogen measurements indicate that sulphide exposure does not increase hydrogen content. ABSTRACT Friction stir welded oxygen‐free phosphorus‐doped copper (FSW Cu‐OFP) is a candidate material for
Patrik Sahiluoma, Tiina Ikäläinen, Juhani Rantala, Timo Saario   +3 more
wiley   +1 more source

Notes on Chinese antimony ores, crude and regulus [PDF]

Journal of the Society of Chemical Industry, 1913
n ...
openaire   +2 more sources