 | | Journal (article/letter/editorial) | | MINERALIZATION IN THE GENINA GHARBIA MAFIC–ULTRAMAFIC INTRUSION, EASTERN DESERT, EGYPT HASSAN M. HELMY§ Department...Geology, Minia University, 61111-Minia, Egypt ABSTRACT The Genina Gharbia intrusion is a small late Precambrian...mafic–ultramafic complex in the Eastern Desert of Egypt. It comprises harzburgite, lherzolite, pyroxenite...pyrite = violarite = cubanite and minor cobaltite–gersdorffite, nickeline, sphalerite, molybdenite and valleriite...mineralogical and chemical characteristics of the Genina Gharbia mineralization are best explained by a three-stage |  | | Journal (article/letter/editorial) | | from three Cu–Ni–PGE prospects, Eastern Desert, Egypt Hassan M. Helmy* Geology Department, Faculty of...of Science, Minia University, 61111-Minia, Egypt Received 21 April 2004; accepted 11 April 2005 Available...prospects in the Eastern Desert of Egypt: Gabbro Akarem, Genina Gharbia and Abu Swayel. The prospects are...and post-magmatic hydrothermal processes. At Genina Gharbia, ore forms either disseminations in peridotite...Tellurides; Solid solution; Cu–Ni–PGE prospects; Egypt * Fax: +20 086 342601. E-mail address: hmhelmy@yahoo |  | Barkov, Andrei Y., Shvedov, Gennadiy I., Flemming, Roberta L., Vymazalová, Anna, Martin, Robert F. (2017) Melonite from Kingash and Kuskanak, Eastern Sayans, Russia, and the extent of Bi-for-Te substitution in melonite and synthetic Ni(Te,Bi)2–x. Mineralogical Magazine, 81 (3) 695-705 doi:10.1180/minmag.2016.080.119 | Journal (article/letter/editorial) | | melonite in intimate intergrowths with cobaltite-gersdorffite from the Neoproterozoic dunite-wehrlite-gabbro...reported occurrences of melonite are shown by the red symbol. light of overall variations gathered in...association with: members of the cobaltite (cob)–gersdorffite (ger) series, michenerite [mch; Pd1.01Bi0.87–0...Sb), palladoan melonite, Rh-bearing cobaltite-gersdorffite and a Pdbearing tetra-auricupride (≤4 wt.% Pd)...subhedral grains of members of the cobaltite– gersdorffite series (Figs 2a–f ). Typically, these are present |  | Helmy, H. M., Ballhaus, C., Fonseca, R. O. C., Nagel, T. J. (2013) Fractionation of platinum, palladium, nickel, and copper in sulfide–arsenide systems at magmatic temperature. Contributions to Mineralogy and Petrology, 166 (6) 1725-1737 doi:10.1007/s00410-013-0951-9 | Journal (article/letter/editorial) | | Department of Geology, Minia University, Minia 61519, Egypt e-mail: hmhelmy@yahoo.com discrete minerals. In...close to gersdorffite and a Pd–Ni-enriched arsenide melt (Fig. 2L) that quenches out gersdorffite dendrites...is an immiscible Pd–Ni–As melt and Pd-bearing gersdorffite (NiAsS), below that temperature crystalline...crystalline palladoarsenide (Pd,Ni)2As and gersdorffite coexist. The sulfide phase at 700 °C is iss. Error bars...crystalline arsenide stable at 770 °C is S-deficient gersdorffite (not displayed but see composition in Table |  | | Report (volume) | | (NiAs, nickeline; Ni11As8, maucherite; NiAsS, gersdorffite) in the magmatic sulfide segregations within...temperatures decrease. During this phase, termed the red giant phase, the star begins to ascend to the upper...right on the Hertzsprung–Russell (H–R) diagram (red giant branch; Fig. 2). The He core increases its...with A > 130 (Tsujimoto and Shigeyama 2014). Unlike red giants and supernovae, however, neutron star mergers...average. This is consistent with those observed in red giant and AGB stars. Group 2 grains have significant |
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