Compositional appraisal and quality implication of Emiworo metacarbonate deposit in Central Nigeria
2017
Metacarbonate deposit occurring in Emiworo area, northcentral Nigeria are low grade marble associated with Proterozoic basement complex rocks. Integrated inorganic geochemical, physical and thermal characteristics of the samples were investigated with the aim of revealing their economic viability. The phase characteristics of the metacarbonate show that dolomite is the dominant phase with calcite and phlogopite as minor phases, while silicates, graphites and pyrites constitute the accessories. Reactivity of the quicklime measured after calcination at different temperatures revealed that only the quicklime produced in 1 hour at 950°C and 1000°C was found to be reactive. Physical properties and comparative data show that the Emiworo marble displays lower water absorption and higher compressive strength, loss on ignition and bulk specific gravity, compared to other metacarbonate rocks occurring in other parts of Nigeria and elsewhere. These attributes makes the deposit suitable for many conventional industrial applications.
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