Matches in SemOpenAlex for { <https://semopenalex.org/work/W3208455912> ?p ?o ?g. }
- W3208455912 endingPage "106525" @default.
- W3208455912 startingPage "106525" @default.
- W3208455912 abstract "The ultramafic rocks of Gabal Balamhindit are exposed as conspicuous ridges in the south Eastern Desert of Egypt, Northern Nubian Shield. These rocks include extensively to completely serpentinized harzburgites and dunites, which are listvenitized along faults and shear zones. The relict primary minerals of these serpentinized peridotites are represented by olivine, orthopyroxene and Cr-spinel, whereas serpentine minerals, amphiboles and chlorite are secondary phases. The listvenite is composed essentially of quartz and carbonates, with relics of serpentine minerals and Cr-spinel. The carbonate minerals include magnesite, dolomite, breunnerite and calcite. A characteristic feature of listvenite is the presence of rhythmic banding of quartz and carbonate minerals and presence of fuchsite. Mineral chemistry of primary minerals revealed that the Fo content of olivine, Mg# of orthopyroxene and Cr# of Cr-spinel in serpentinized dunite are higher than those of corresponding minerals in the serpentinized harzburgite. The composition of primary minerals in both serpentinized dunite and harzburgite (olivine Fo = 90–92; orthopyroxene Mg# = 0.91–0.93; Cr-spinel with Cr# of 0.61–0.72 and TiO2 content of 0.04–0.2 wt%) and whole-rock geochemical characteristics (Mg# = 0.91–0.92; low TiO2 content of values <0.04 wt%) are consistent with depleted mantle protolith, typically associated with supra-subduction zone environments, and more specifically with fore-arc settings. The examined serpentinized peridotite represents mantle residue that experienced different degrees of partial melting (33–40%). The restriction of listvenization to shear zones and presence of relics of mesh-textured serpentine and Cr-spinel with ferritchromite rims in the listvenite reflect formation through replacement of ultramafic rocks during ophiolite obduction in the Arabian-Nubian Shield. Schistosity and deformation fabrics in the listvenite imply that initial listvenitization took place at conditions similar to those where serpentinization of primary ultramafic precursors occurred. The Balamhindit listvenite has variable contents of fluid mobile elements such as As (127–164 ppm), Sb (8–18 ppm), Sr (88–162 ppm) and Pb (193–276 ppm), with presence of native gold. Compared to listvenites, serpentinites contain less amounts of these elements (4–9 ppm As, 0.26–1.02 ppm Sb, 4–10 ppm Sr and 0.27–1.27 ppm Pb). The wide distribution of listvenites along the suture zones favor a metamorphic source of the fluids during the accretionary tectonics. The listvenitization process concentrated gold in listvenite compared to the low-grade Au concentration in the host serpentinite. The Au content in listvenite samples shows positive correlation with the metals Zn, As, Cu, Ag and Pb, suggesting a common source. The listvenites of Gabal Balamhindit are auriferous, with gold content up to 3 ppm, suggesting that the listvenites of the Arabian-Nubian Shield (ANS) are potential target for gold exploration." @default.
- W3208455912 created "2021-11-08" @default.
- W3208455912 creator A5010573418 @default.
- W3208455912 creator A5013161695 @default.
- W3208455912 creator A5033865352 @default.
- W3208455912 creator A5052483481 @default.
- W3208455912 creator A5059460438 @default.
- W3208455912 creator A5062543491 @default.
- W3208455912 creator A5068449431 @default.
- W3208455912 creator A5079304089 @default.
- W3208455912 date "2021-12-01" @default.
- W3208455912 modified "2023-09-27" @default.
- W3208455912 title "Carbonation of Neoproterozoic mantle section and formation of gold-bearing listvenite in the Northern Nubian Shield" @default.
- W3208455912 cites W1534749586 @default.
- W3208455912 cites W1965999150 @default.
- W3208455912 cites W1966685022 @default.
- W3208455912 cites W1967784536 @default.
- W3208455912 cites W1969859799 @default.
- W3208455912 cites W1970767963 @default.
- W3208455912 cites W1978340247 @default.
- W3208455912 cites W1981054075 @default.
- W3208455912 cites W1983507683 @default.
- W3208455912 cites W1999280811 @default.
- W3208455912 cites W2008791491 @default.
- W3208455912 cites W2011972586 @default.
- W3208455912 cites W2012546453 @default.
- W3208455912 cites W2019635371 @default.
- W3208455912 cites W2029422460 @default.
- W3208455912 cites W2036044005 @default.
- W3208455912 cites W2041067110 @default.
- W3208455912 cites W2047888525 @default.
- W3208455912 cites W2049517286 @default.
- W3208455912 cites W2049858437 @default.
- W3208455912 cites W2060655431 @default.
- W3208455912 cites W2069301639 @default.
- W3208455912 cites W2075901285 @default.
- W3208455912 cites W2076996184 @default.
- W3208455912 cites W2077877492 @default.
- W3208455912 cites W2080198117 @default.
- W3208455912 cites W2099007620 @default.
- W3208455912 cites W2110522845 @default.
- W3208455912 cites W2113369720 @default.
- W3208455912 cites W2115149038 @default.
- W3208455912 cites W2122467685 @default.
- W3208455912 cites W2122668781 @default.
- W3208455912 cites W2125733132 @default.
- W3208455912 cites W2127236625 @default.
- W3208455912 cites W2132136583 @default.
- W3208455912 cites W2135015385 @default.
- W3208455912 cites W2137977636 @default.
- W3208455912 cites W2144700058 @default.
- W3208455912 cites W2145017647 @default.
- W3208455912 cites W2161866809 @default.
- W3208455912 cites W2166460274 @default.
- W3208455912 cites W2166828164 @default.
- W3208455912 cites W2168672163 @default.
- W3208455912 cites W2168801553 @default.
- W3208455912 cites W2169117356 @default.
- W3208455912 cites W2210515644 @default.
- W3208455912 cites W2212489355 @default.
- W3208455912 cites W2263943679 @default.
- W3208455912 cites W2526036728 @default.
- W3208455912 cites W2551031612 @default.
- W3208455912 cites W2604320160 @default.
- W3208455912 cites W2762123799 @default.
- W3208455912 cites W2794419369 @default.
- W3208455912 cites W2810498535 @default.
- W3208455912 cites W2905178961 @default.
- W3208455912 cites W2994949754 @default.
- W3208455912 cites W2998703158 @default.
- W3208455912 cites W3007306544 @default.
- W3208455912 cites W3040935766 @default.
- W3208455912 cites W3048548881 @default.
- W3208455912 cites W3146392837 @default.
- W3208455912 cites W3161991894 @default.
- W3208455912 doi "https://doi.org/10.1016/j.lithos.2021.106525" @default.
- W3208455912 hasPublicationYear "2021" @default.
- W3208455912 type Work @default.
- W3208455912 sameAs 3208455912 @default.
- W3208455912 citedByCount "5" @default.
- W3208455912 countsByYear W32084559122022 @default.
- W3208455912 countsByYear W32084559122023 @default.
- W3208455912 crossrefType "journal-article" @default.
- W3208455912 hasAuthorship W3208455912A5010573418 @default.
- W3208455912 hasAuthorship W3208455912A5013161695 @default.
- W3208455912 hasAuthorship W3208455912A5033865352 @default.
- W3208455912 hasAuthorship W3208455912A5052483481 @default.
- W3208455912 hasAuthorship W3208455912A5059460438 @default.
- W3208455912 hasAuthorship W3208455912A5062543491 @default.
- W3208455912 hasAuthorship W3208455912A5068449431 @default.
- W3208455912 hasAuthorship W3208455912A5079304089 @default.
- W3208455912 hasConcept C127313418 @default.
- W3208455912 hasConcept C151730666 @default.
- W3208455912 hasConcept C17409809 @default.
- W3208455912 hasConcept C178790620 @default.
- W3208455912 hasConcept C185592680 @default.
- W3208455912 hasConcept C195081551 @default.
- W3208455912 hasConcept C199289684 @default.