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    STUDIA GEOLOGIA - Issue no. 3 / 2003  
         
  Article:   MINE-WASTE MANAGEMENT.

Authors:  ŞERBAN NICOLAE VLAD, DAN COSTIN. 		 
       
         
  Abstract:  Mineral extraction and processing, especially metal mining, exposes fresh rock surfaces and produces crushed and milled waste. Such material, exposed to weathering, poses a potential danger to the environment. Sulfide-bearing mineralization, if oxidized, has the potential to produce: a) sulfuric acid, known as acid rock drainage (ARD), and b)increased heavy-metal mobility. Significant contamination of surface and groundwater may result from these two processes. Anyway, not all sulfide-containing waste materials present a threat to the environment, even though they may contain geochemically important heavy-metal concentrations. Through detailed mineralogical and geochemical investigation, it is possible to evaluate and quantify the environmental threat from mine materials and materials to be mined. Based on the mineralogic and thermodynamic assessment of the geochemical processes that are likely to occur in unmined material or that are currently taking place within mined materials, geologically and economically reasonable waste management decisions can be made. ...  
         
     
         
         
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