Growth of Photosynthetic Biofilms and Fe, Pb, Cu, and Zn Speciation in Unsaturated Columns with Calcareous Mine Tailings from Arid Zones

<table>Location of the Concepción del Oro mining area (Zacatecas, North-Central Mexico).</table>

Applied and Environmental Soil Science

Figure 1: Growth of Photosynthetic Biofilms and Fe, Pb, Cu, and Zn Speciation in Unsaturated Columns with Calcareous Mine Tailings from Arid Zones 