Abstract
Anthropogenic carbon dioxide emission mainly from metallic mining industry is the major gases that increase greenhouse gases. Mining wastes that are discarded from mining operation might have potential as a solid buffer in storing atmospheric carbon dioxide for long term by mineral carbonation. Therefore, this study was conducted to identify the major minerals in the waste rocks at waste dump and stockpile of a gold mine, and to determine the potential of silicate minerals from gold mining wastes for mineral carbonation process. Waste rocks sample from the waste dump and stockpile were obtained and were analyzed using X-ray diffractometer. Findings indicated that quartz, mica, dolomite, and calcite are the major minerals found in the waste rocks. Results also demonstrated that carbonate minerals such as dolomite, calcite, and siderite are in stable form that are considered a reservoir for carbon storage. Silicates minerals such as chlorite, pyroxene, mica, and amphiboles that are present at both waste dump and stockpile contain magnesium, calcium, and iron silicates ions, which can facilitate the formation of carbonate minerals. Thus, the presence of potential minerals from gold mining wastes provides a great possibility for carbon sequestration that can encourage evaluation of carbon footprint in mining industry.
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