Results 21 to 30 of about 4,473 (252)
Minerals, 2022 This contribution presents the first systematic mineralogical study of chromite composition, silicates and PGM (platinum group minerals) by electron microprobes in the podiform chromitite of Kabaena Island (Indonesia) mined in the past.
A. Idrus +4 more
semanticscholar +1 more source
The Tornio layered intrusion - a recently discovered intrusion with chromitite horizons in Northern Finland [PDF]
Bulletin of the Geological Society of Finland, 1982 In the 1960's chromite boulders were found in the area between the Kemi chromium mine and the town of Tornio. In 1979 after many years of prospecting a layered intrusion with thin chromitite layers was found northeast of the town of Tornio.
K. Söderholm, O. Inkinen
doaj +1 more source
, 2021 Drilling related to development of the platinum-group element deposit of the J-M Reef of the Stillwater Complex returned samples of a rare chromitite seam between anorthosite and norite in a discordant anorthositic body.
Jennifer. Marsh +2 more
semanticscholar +1 more source
The Changing Character of Carbon in Fluids with Pressure
Geophysical Monograph Series, Page 259-269., 2020 This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.
Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions
Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Dimitri Sverjensky +2 more
wiley +1 more source
Multistage origin of dunite in the Purang ophiolite, southern Tibet, documented by composition, exsolution and Li isotope characteristics of constituent minerals [PDF]
European Journal of Mineralogy, 2020 The Purang ophiolite, which crops out over an area of about 650 km2 in the western Yarlung–Zangbo suture zone, consists chiefly of mantle peridotite, pyroxenite and gabbro.
F. Xiong +6 more
doaj +1 more source
Minerals, 2022 We provide results of a comprehensive mineralogical and microstructural study of relict lherzolites of the main ore field and fresh rocks from a deep structural borehole drilled in the south-eastern part of the Kempirsay massif. Olivine and orthopyroxene
D. Saveliev +4 more
semanticscholar +1 more source
Integrated geophysical methods for boulder delineation to improve mining
Geophysical Prospecting, Volume 71, Issue 7, Page 1226-1246, September 2023., 2023 Abstract Near‐surface boulders can pose serious challenges to opencast mining. They often introduce complexities, delays in drilling, blasting and excavation programmes, which subsequently decrease mining efficiency, increase mining risks and costs. The location of subsurface boulders and the identification of other geological features that may impact ...
Sikelela Gomo +13 more
wiley +1 more source
Geology Today, Volume 39, Issue 4, Page 130-143, July/August 2023., 2023 The Central Series of the Paleocene mafic to ultramafic Rum complex is the youngest of the three main cumulate series that make up the layered igneous complex of this famed Scottish island. The Central Series lies along the Long Loch Fault and provides insights into the feeder system to the Rum intrusion at an erosion level of about two kilometres ...
Brian G.J. Upton +3 more
wiley +1 more source
Acta Geologica Sinica - English Edition, Volume 97, Issue 3, Page 727-743, June 2023., 2023 Abstract The Hongshishan chromitite deposits are situated to the north of the Beishan orogenic collage, in the southern part of the Central Asian Orogenic Belt. This study describes the mineral chemistry, Re‐Os isotopes and platinum‐group elements geochemistry of the Hongshishan chromitites for the purpose of constraining the origin, evolution and ...
Zhaolin WANG +6 more
wiley +1 more source
Journal of Metamorphic Geology, Volume 41, Issue 4, Page 491-523, May 2023., 2023 Abstract The petrostructural and geochronological study of a poorly known ultramafic unit from SW Spain (Badajoz–Córdoba belt) combined with previous structural data permits disclosure of a history of metasomatism, tectono‐metamorphism, reworking and isotopic resetting related to a poly‐orogenic evolution in different geodynamic scenarios.
Benito Ábalos +2 more
wiley +1 more source