Polyphase deformation of mylonites from the Renco gold mine (Zimbabwe): identified by crystallographic preferred orientation of quartz

Windows of metamorphic sulfur liberation in the crust: Implications for gold deposit genesis

“…None formed well within the granulite facies. Very few are thought to have formed at mid-amphibolite facies conditions and above, and many of those hosted in rocks of high metamorphic grade may have either been metamorphosed (e.g., Big Bell - Phillips and de Nooy, 1988;Challenger -Tomkins and Mavrogenes, 2002;Hemlo -Tomkins et al, 2004;Griffin's Find -Tomkins and Grundy, 2009) or mineralised under retrograde conditions (Renco - Kolb et al, 2000Kolb et al, , 2003 -(cf. Phillips and Powell, 2009;Tomkins and Grundy, 2009).…”

Fluid flow in shear zones: insights from the geometry and evolution of ore bodies at Renco gold mine, Zimbabwe

“…The gently dipping shear zones dip to the E to SE on average at 36° and kinematic indicators show a reverse sense (Kisters et al. 1998; Kolb et al. 2003).…”

“…Although mineralization under greenschist facies conditions in the Proterozoic has been proposed (Blenkinsop & Frei 1996), more extensive and detailed work by Kisters et al. (1997, 1998, 2000) and Kolb et al. (2000, 2003) shows that the mineralization was a high metamorphic grade (600°C, 4–6 kbar) late Archean event.…”

“…The mineralization at Renco has been described on a micron to metre scale (Kisters et al. 1998, 2000; Kolb et al. 2000, 2003; Kolb & Meyer 2002), but the configurations of the ore bodies and the deposit on metre to kilometre scales have not been described previously.…”

The affinity of Archean crust on the Yilgarn—Albany–Fraser Orogen boundary: Implications for gold mineralisation in the Tropicana Zone

“…A c c e p t e d M a n u s c r i p t Page 43 of 43 with an Early Proterozoic tectonothermal event in the Limpopo belt and linked to 996 exhumation and retrogression of the granulites to amphibolite-facies rocks during 997 thrusting onto lower-grade rocks of the Zimbabwe Craton (Kolb et al, 2003). Further 998 tectonic disturbance to gold bearing structures occurred at c. 2.0 Ga under greenschist 999 facies conditions (Blenkinsop et al, 2004).…”