Results 11 to 20 of about 113 (103)
Egyptian Journal of Remote Sensing and Space Sciences, 2012 This research aims at integrating remote sensing data and field studies for lithological mapping of different rock units. Geological interpretation of Landsat ETM+ image and field studies revealed that the study area is mainly covered by ophiolitic ...
A.K.A. Salem, A.E. Khalil, T.M. Ramadan
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CHROMITITE PROSPECTING USING LANDSAT TM AND ASTER REMOTE SENSING DATA [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015 Studying the ophiolite complexes using multispectral remote sensing satellite data are interesting because of high diversity of minerals and the source of podiform chromitites.
A. Beiranvand Pour +2 more
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Journal of Economic Geology, 2019 Introduction Podiform chromite deposits are small magmatic chromite bodies formed in the lower section of an ophiolite complex. Podiform chromite mines have produced 57.4 percent of the world’s total chromite production.
Jaber Masoudi, Ali Imamalipour
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Geological Journal, Volume 53, Issue 2, Page 580-599, March/April 2018., 2018 Chromites and sulphides are the most common ore minerals in the ophiolitic metasomatized ultramafics (~790 Ma) of Um Halham, Fawakhir and Barramiya, central Eastern Desert, Egypt. These ultramafics exhibit variable degrees of alteration and metasomatism and include massive serpentinites (serpentinized peridotite and serpentinite), tremolite‐talc rocks,
Abdel‐Aal M. Abdel‐Karim +2 more
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Genesis of Chromitite in Qalander Area, Northern Iraq [PDF]
Kirkuk Journal of Science, 2006 The study area is an isolated ultramafic complex composite of harzburgite-dunite-chromitite association in Qalander area, abut 10 km east of Mergesur, Erbil City, northern Iraq.
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Chromian spinel geochemistry as a petrogenetic indicator in the chromitites and peridotites of the Bajgan Complex, Western Makran [PDF]
پترولوژیIntroductionEconomic chromite deposits are very common in ophiolite belts. These deposits usually occur in the uppermost horizons of the ophiolite mantle sequence or within the ultramafic cumulitic rocks at the base of the crustal sequence (González ...
Leila Vahedi +2 more
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Ophiolite-Hosted Diamond: A New Window for Probing Carbon Cycling in the Deep Mantle
Engineering, 2019 As reported in our prior work, we have recovered microdiamonds and other unusual minerals, including pseudomorph stishovite, moissanite, qingsongite, native elements, metallic alloys, and some crustal minerals (i.e., zircon, quartz, amphibole, and rutile)
Dongyang Lian, Jingsui Yang
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Recycling Subducted Organic Carbon as Diamonds: An Example From the New Caledonia Forearc Ophiolite
Geochemistry, Geophysics, Geosystems, Volume 26, Issue 4, April 2025.Abstract Micro‐diamonds and moissanite (SiC) have been identified in ophiolitic mantle harzburgites and chromitites of the New Caledonian Peridotite Nappe. The pale yellow (100–250 μm) micro‐diamonds and light blue moissanite (mean −26.5‰, range −33.5‰ to −23.8‰ and mean −26.9‰, range −31.8‰ to −25.6‰ respectively) exhibit consistently strong negative ...
Jonathan C. Aitchison +7 more
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Chromitite deposits of Ufaley ultramafic massif (South Urals)
GeoresursyData 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
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Геодинамика и тектонофизикаThe paper presents the first data on detrital zinc chromites from banded ilmenite-hematite sandstone of the terrigenous Bezymyannaya formation of the Tuva-Mongolian terrane in the eastern part of the East Sayan.
O. N. Kiseleva +5 more
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