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

<table>Major mineralogical phases obtained by X-ray diffraction (XRD). An: andradite (Ca<sub>3</sub>Fe<sub>2</sub>(SiO<sub>4</sub>)<sub>3</sub>); Cc: calcite (CaCO<sub>3</sub>); Cv: covellite (CuS); Q: quartz (SiO<sub>2</sub>); Py: pyrite (FeS<sub>2</sub>).</table>

Applied and Environmental Soil Science

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Figure 4

Figure 4: Growth of Photosynthetic Biofilms and Fe, Pb, Cu, and Zn Speciation in Unsaturated Columns with Calcareous Mine Tailings from Arid Zones 