Geological characteristics and safety study of the inkstone slate deposit in Shexian County, southern Anhui Province

Through a detailed field geological survey, this paper investigated the strata and minerogenetic conditions of the inkstone slate mine in Shuanghekou district of Shexian in southern Anhui Province. The inkstone deposit is a stratabound-type metamorphic-sedimentary deposit occuring in black slates of the upper Daguyun Formation of Neoproterozoic era. A systematic indoor rock-mineral determination and analytical test reveal the mineral composition, structure and chemical constitutions of the inkstone slates. In addition, field radioactive measurements show that radiation of the natural ore is at a safe level, thus providing scientific basis for the exploration of inkstone resources.