Chromian spinel geochemistry as a petrogenetic indicator in the chromitites and peridotites of the Bajgan Complex, Western Makran [PDF]
IntroductionEconomic 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
doaj +1 more source
MINERALOGICAL-GEOCHEMICAL AND STRUCTURAL FEATURES OF ULTRAMAFIC ROCKS AND CHROMITITES OF THE MALY BASHART CHROMITE-BEARING ZONE OF THE SOUTH KRAKA MASSIF (SOUTH URALS) [PDF]
Results of structural-petrological and mineralogical-geochemical studies of chromitite-bearing zone within spinel peridotites of the South Kraka ophiolite massif are presented.
D.E. Saveliev +2 more
doaj
Podiform chromitite bodies occur in highly serpentinized peridotites at Dobromirtsi Ultramafic Massif (Rhodope Mountains, southeastern Bulgaria). The ultramafic body is believed to represent a fragment of Palaeozoic ophiolite mantle.
J.M. GONZÁLEZ JIMÉNEZ +3 more
doaj
Chromitites: An Enigmatic Mantle Rock Type
Various characteristics of podiform chromitites, an enigmatic mantle rock member, are reviewed in this article. Chromitites are composed of chromian spinel, with the general formula (Mg, Fe2+)(Cr, Al, Fe3+)2O4, and silicates (mainly olivine). The Fe3+ content is generally very low, being less than 0.1 to all trivalent cations, in mantle chromian ...
openaire +2 more sources
Chromite chemistry of a massive chromitite seam in the northern limb of the Bushveld Igneous Complex, South Africa: correlation with the UG-2 in the eastern and western limbs and evidence of variable assimilation of footwall rocks. [PDF]
Langa MM +5 more
europepmc +1 more source
Strontium isotope stratigraphy through the Flatreef PGE-Ni-Cu mineralization at Turfspruit, northern limb of the Bushveld Igneous Complex: evidence of correlation with the Merensky Unit of the eastern and western limbs. [PDF]
Mayer CC +4 more
europepmc +1 more source
Chromespinel and Magnetite as Indicators for Recognition of Genesis and History of Serpentinites in Baft Ophiolite Mélange (Kerman Province in Iran) [PDF]
Baft ophiolite mélange is a part of Naein-Baft ophiolite (southeast of Kerman province in Iran). Serpentinites from Baft ophiolite mélange contain different types of spinels such as chromite, chromespinel, ferritchromite and magnetite which can reveal ...
N. Mohammadi, H. Ahmadipour
doaj
The Rustenburg Layered Suite formed as a stack of mush with transient magma chambers. [PDF]
Yao Z, Mungall JE, Jenkins MC.
europepmc +1 more source
Vertical depletion of ophiolitic mantle reflects melt focusing and interaction in sub-spreading-center asthenosphere. [PDF]
Xiong Q +6 more
europepmc +1 more source
Magmatic karst reveals dynamics of crystallization and differentiation in basaltic magma chambers. [PDF]
Kruger W, Latypov R.
europepmc +1 more source

