Results 41 to 50 of about 3,682 (259)

Chromitite deposits of Ufaley ultramafic massif (South Urals)

Georesursy
Data on the morphology, composition, textural and structural features of chromite deposits of the Ufaley ultramafic massif are presented. The mineralogical and compositional features of the host ultramafic rocks allow us to interpret them as depleted ...
D. E. Saveliev
doaj   +1 more source

Tibetan chromitites: Excavating the slab graveyard

Geology, 2015
Podiform chromitites enclosed in depleted harzburgites of the Luobusa massif (southeastern Tibet) contain diamond and a highly reduced trace-mineral association. Exsolution of diopside and coesite from chromite suggests inversion from the Ca-ferrite structure in the upper part of the mantle transition zone (>400 km).
McGowan, Nicole, Griffin, William, González Jiménez, José, Belousova, Elena, Afonso, Juan Carlos, Shi, Rendeng, McCammon, Catherine, Pearson, Norman, O'Reilly, Suzanne Y.   +8 more
openaire   +4 more sources

Assessment of Radioactivity in Building Materials

ARO-The Scientific Journal of Koya University
This research investigates the radioactivity levels of various rock types used in construction within the Kurdistan region and assesses their potential impact on human health, the measurements were performed using an HPGe gamma-ray spectrometer.
Adeeb O. Jafir, Mohammed I. Hussein, Idrees A. Nadir, Barzan N. Sabr, Ali H. Hassan   +4 more
doaj   +1 more source

Contamination of useful plant leaves with chromium and other potentially toxic elements and associated health risks in a polluted mining-smelting region of South Africa

Environmental Advances, 2022
Foliar exposure to dust-borne potentially toxic elements (PTEs) is often overlooked in chromium (Cr) mining and industrial regions. A comparative analysis of unwashed (UL) and washed leaves (WL) was conducted to investigate the contribution of dust to Al,
Sutapa Adhikari, João Marcelo-Silva, Johan Paul Beukes, Pieter Gideon van Zyl, Yolindi Coetsee, Ricart Barend Boneschans, Stefan John Siebert   +6 more
doaj   +1 more source

Two new minerals, badengzhuite, TiP, and zhiqinite, TiSi₂, from the Cr-11 chromitite orebody, Luobusa ophiolite, Tibet, China: is this evidence for super-reduced mantle-derived fluids? [PDF]

European Journal of Mineralogy, 2020
Titanium minerals enclosed in corundum separated from the Cr-11 orebody include native Ti, zamboite (FeTiSi2), osbornite (TiN)-khamrabaevite (TiC) solid solutions, and jingsuiite (TiB2), as well as the new minerals badengzhuite (TiP) and zhiqinite (TiSi2)
F. Xiong, F. Xiong, X. Xu, E. Mugnaioli, M. Gemmi, R. Wirth, E. S. Grew, P. T. Robinson, J. Yang, J. Yang, J. Yang   +10 more
doaj   +1 more source

Morphological, textural and structural features of chromitite deposits of Main ore field of Kempirsay massif (South Urals, Kazakhstan)

Georesursy
In the paper data of morphology, textural and structural features of chromitites from deposits of southeast part of Kempirsay massif (South Urals, Kazakhstan) are summarized. It is showed that formation of unique chromium deposits is closely related with
D. E. Saveliev, D. K. Makatov, V. S. Portnov, R. A. Gataullin   +3 more
doaj   +1 more source

Phlogopite and Hornblende in the Contact Metamorphosed Ultramafic Complex at Yanomine, Sangun Metamorphic Zone, Japan [PDF]

, 1999
Phlogopite and hornblende were found in amall amounts in the contact-metamorphosed dunite-harzburgite complex at Yanomine. Phlogopite occurs in interstices of silicate minerals in dunite and harzburgite located near the contact with granite.
Inoue, Yoshinori, Kase, Katsuo
core   +1 more source

PGE distribution in the Chromite bearing mafic-ultramafic Kondapalli Layered Complex, Krishna district, Andhra Pradesh, India

Open Geosciences, 2015
The Kondapalli Layered Complex (KLC) is a dismembered mafic-ultramafic layered intrusion, mainly composed of gabbroic and anorthositic rocks with subordinate ultramafics and chromitite.
Meshram Tushar M., Nannaware Shraddha. B., Nannaware B., Bhatacharjee Shantanu, Waghmare Minakshi. M., Rajakumar T.   +5 more
doaj   +1 more source

Early Cambrian forearc ophiolite-hosted VMS-type Cu deposit in the North Qaidam belt, northern Tibetan Plateau

Geosystems and Geoenvironment, 2023
The North Qaidam belt is an important polymetallic metallogenic belt in the northwestern region of China. However, the tectonic setting and age of related VMS deposits remain debated.
Changlei Fu, Bingzhang Wang, Zhen Yan, Jonathan C. Aitchison, Wenjiao Xiao, Solomon Buckman, Wufu Li   +6 more
doaj   +1 more source

Global Comparison of Aqueous Geochemistry and Dissolved H2/CH4 in Continental Low Temperature Serpentinization–Influenced Environments

Hydrological Processes, Volume 40, Issue 3, March 2026.
Conceptual diagram of hydrological and geochemical processes within the Santa Elena Ophiolite, Costa Rica. It highlights watershed cross‐sections, soil genesis, hyperalkaline Type II waters (pH > 11.6) with calcite crust and trapped H2/CH4 gases, seepage into surface waters, storm‐impacted stream profiles, weathered vs.
Alexandra May, Ricardo Sánchez‐Murillo, Matthew O. Schrenk, Esteban Gazel, J. Maarten de Moor, Christian Birkel, Xiaoqiang Li, Danelle Carr, María Marta Chavarría   +8 more
wiley   +1 more source