Silcrete and quartzite can create sharp flakes and have been important materials for stone tool making by Aboriginal AustraliansTwelve pieces of partially worked stone by Aboriginal people. Flakes or core, silcrete or quartzite. 8968.1 - Silcrete, pale material is anatase 8968.2 - Silcrete 8968.3 - Silcrete 8968.4 - Quartzite 8968.5 - Quartzite 8968.6 - Quartzite - heavily cemented on metamorphosed sandstone 8968.7 - Silcrete 8968.8 - Quartzite 8968.9 - Silcrete in sandy texture (others muddy texture) 8968.10 - Quartzite 8968.11 - Silcrete - part course, part fine, not neatly layered 8968 - 12 Silcrete - two textures - partly muddy, partly sandy stone, aboriginal, aborigines, stone tools, silcrete, quartite, flakes, tools