Precambrian podiform chromitites from Kenticha Hill, southern Ethiopia

Platinum-group elements distribution and spinel composition in podiform chromitites and associated rocks from the upper mantle section of the Neoproterozoic Bou Azzer ophiolite, Anti-Atlas, Morocco

“…The TiO 2 content, considered a key factor for the identification of the tectonic setting (e.g. Arai, 1992;Bonavia et al, 1993;Arai and Matsukage, 1998), is extremely low in both the dunite and harzburgite spinels averaging 0.06 and 0.03 wt%, respectively. Variations in the TiO 2 content vs. the Cr# in spinels from the chromitites, dunites and harzburgites (Fig.…”

Origin of magnetite veins in serpentinite from the Late Proterozoic Bou-Azzer ophiolite, Anti-Atlas, Morocco: An implication for mobility of iron during serpentinization

“…In addition, we describe in brief the host peridotite, because only limited number of studies on peridotites have been published for the Precambrian ophiolites (e.g. Quick, 1990;Bonavia et al, 1993;Liipo et al, 1995;Vuollo et al, 1995;Suita and Strieder, 1996;Ahmed et al, 2001;Gahlan, 2003;Kusky, 2004).…”

Supra-subduction affinity in the Neoproterozoic serpentinites in the Eastern Desert, Egypt: Evidence from mineral composition

“…(b) Al 2 O 3 versus Cr 2 O 3 diagram for the accessory fresh chrome spinels (afterBonavia et al, 1993).…”