We studied the mineralization and sulfur isotopic composition of sulfides gold–palladium ores in olivine clinopyroxenites from Dzelyatyshor massif made up a continuous layered series rocks: olivine-free clinopyroxenite–olivine clinopyroxenite–wehrlite. The primary igneous layering rocks, manifested as different quantitative ratios clinopyroxene them, controls local trends variability chemistry ...

To improve the understanding of formation and evolution sub-continental lithospheric mantle (SCLM) underlying South Australian Craton we have conducted a detailed petrological study on >3,000 xenocrysts from 13 kimberlites emplaced across craton. Pressure (P) temperature (T) estimates Cr diopside garnet been coupled with their chemical concentrations to constrain thickness chemo-lithostratigrap...

The Big Jim complex is a concentrically zoned ultramafic to felsic plutonic complex which intruded the pelitic Chiwaukum schist. Most of the major plutonic rock types (from websterite through hornblendite, gabbronorite, hornblende gabbro and diorite, to granodiorite) enclose harzburgite and metaperidotite xenoliths similar to foliated metaperidotite lenses included in the Chiwaukum schist. The ...

Introduction: New discoveries in cold (Antarctica) and hot desert areas have significantly increased the number of Martian meteorites (SNC) to more than 50 (unpaired) [1,2]. Martian meteorites are classified in four main groups in terms of their pe-trology and mineralogy, namely Orthopyroxenite (1 published member), Chassignites (dunite, 2), Nakhlites (clinopyroxenite, 7) and Shergottites (42) ...

The studied serpentinites occur as isolated masses, imbricate slices of variable thicknesses and as small blocks or lenses incorporated in the sedimentary matrix of the mélange. They are thrusted over the associated island arc calc-alkaline metavolcanics and replaced by talccarbonates along shear zones. Lack of thermal effect of the serpentinites upon the enveloping country rocks, as well as th...

Wyllie , P. J . 1984 T he effect of carbon dioxide on phase relationships for synthetic lhe rzo lite and harzburgite. In : FL J. Zwart , P. Hartma n & A. C. Tobi (eds): Ophioli tes a nd ultramafic rocks a tribute to Emile den Tex Geol. Mijnbouw 63:213-2 19. T he system Ca0-Mg0-Si0 2 -C02 includes mineral assemblages corresponding to model lhe rzolite: fors te rite(Fo) + orthopyroxene(Opx) + cli...

The podiform chromitite deposits of the Ordovician Sorkhband ultramafic complex, southwestern Makran, are the largest chromitite deposits in Iran. The Sorkhband ultramafic complex comprises of a northern part of dunite, podiform chromitite, olivine clinopyroxenite, wehrlite and olivine websterite and a southern part of foliated diopsidic harzburgite with subordinate dunite, olivine clinopyroxen...

• Magmatic evolution progressed from mafic to ultramafic. Formation of replacive metasomatic dunites. High MgO melts assimilated limestone forming carbonate and sulfide melts. Late stage magmatic brecciation. Ni-Cu-PGE mineralisation associated with apatite carbonate. The Munali Intrusive Complex is hosted within supracrustal metasedimentary rocks located along a major structural lineament the ...