Review of characteristics of mercury speciation and mobility from areas of mercury mining in semi-arid environments

  • Andrés NavarroEmail author
Review Paper


The speciation of mercury—including most phase minerals, secondary phases, gaseous and aqueous species—is very important for evaluating the environmental impact and mobilization of this contaminant. Mining activities produce mercury mine waste, which includes several types of material (mainly mine waste and calcines) with varying mercury content and speciation depending on the ore deposit and processing technology. The main phase minerals are cinnabar, metacinnabar, metallic Hg0, corderoite, livingstonite, calomel and schuetteite. The aqueous mobilization of mercury is controlled by complex formation, pH-Eh conditions, the primary phase mineral of mercury, and organic-matter and iron oxyhydroxide content. The possibility of colloidal transport of mercury from mine waste is influenced by the atmospheric emission of metallic Hg0 and the leaching of waste by episodic high-intensity precipitations. In these climatic conditions, mercury can be mobilized to pore water, surface water or groundwater by the dissolution of metallic Hg0 and cinnabar in acidic conditions, and by the colloidal transport. The presence of Hg-soluble phases (chlorides and oxychlorides) may enhance the mobilization of mercury. In the semi-arid conditions of the Valle del Azogue (SE Spain) the atmospheric emissions of the Hg0 present in calcines and mine waste may be significant and the dissolution of Hg0 and metal-sulfate salts during episodic runoff events may explain the mobilization of Hg, Fe, Pb, Zn and other heavy metals.


Mercury species Cinnabar Mine waste Solubility Mobilization 



This work was supported by Spanish Ministry of Science and Technology (projects REN2003-09247-C04-03 and ENE2006-13267-C05-03, under the name ‘Desarrollo de un sistema piloto de desorción térmica de suelos contaminados con mercurio’) in collaboration with the Center for Energy, Environment and Technology Research (CIEMAT).


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© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  1. 1.Depto. Mec. de FluidosUniversitat Politècnica de Catalunya (UPC) ETSEIATTerrassaSpain

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