Extreme Fractionation and Deformation of the Leucogranite - Pegmatite Suite at Red Cross Lake, Manitoba, Canada. Iii. Description of Shearing and Mylonitization Textures in the Lepidolite Pegmatites

Fine-grained petalite and spodumene dykes in the Stankuvatske Li-deposit, Ukrainian Shield: products of tectono–metamorphic recrystallisation

“…An analogous scenario was proposed for lepidolite-bearing metapegmatites from Red Cross Lake, Canada (Brisbin et al, 2012).…”

“…The layered albite + quartz + petalite intermediate domain probably reflects high strain and considerable recrystallisation and shearing of primary magmatic petalite I, albite I and quartz. An analogous scenario was proposed for lepidolite-bearing metapegmatites from Red Cross Lake, Canada (Brisbin et al, 2012).…”

“…Classic petalite or spodumene rare-element pegmatites exhibit primary magmatic textures and well-preserved mineral zoning, displaying wall, intermediate and core zones (e.g., Černý 1989;London 2008). On the other hand, there are also known occurrences of Li-rich granitic pegmatites overprinted by subsequent tectono-metamorphic deformation and recrystallisation: examples include the Greenbushes pegmatites in Western Australia (Partington et al, 1995) and the Red Cross Lake pegmatites in Manitoba, Canada (Brisbin et al, 2012;Černý et al, 2012); or by metasomatic recrystallisation, which was described in the Polokhivske Lideposit, Central part of Ukraine (Eremenko et al, 1996;Vozniak et al, 2000) (Fig. 1 a).…”