Effects of Mining Mineral Bearing Sulfide Rich Ores on the Aquatic Ecosystem

Abstract

Mining of mineral deposits c:ontaining ores rich in sulfides needs careful consideration of the potential environmental effects. Disruption of a relatively stable buried deposit of various metals and sulfur compounds creates the potential for negative environmental effects on life. Effects can occur from one or a combination of several sources. A list of the major factors that can affect the well-being of the ecosystem-must include: toxicity of exposed heavy metals and sulfur compounds, pH effects, toxicity of mining chemicals, and physical impacts of deposited mined materials in the aquatic system.

The processes by which an ecosystem can become disturbed by mining activity are complex. It is important to say that each case will be unique and only postulates can be made before any mining operation is a reality. What will be addressed here are considerations th.at can lead to negative effects for the aquatic environment and any possible conditions of mining for minerals in strata rich in sulfides that may reduce toxic effects.