The present study was carried out to show the potential of root exudates mobilize potentially toxic elements (PTE) in rhizospheric carbonated soils. Five different contaminated soils were collected from five former mining districts northern Tunisia (Jebel Hallouf (H3), Sidi-Bouaouane (B1), Jebel Ghozlane (G7), Hammam Zriba (Z2) and Jalta (J2)). abundant minerals these are quartz, calcite clays....

introduction more than 30 fluorite occurrences with approximately 1.35 million tons of reserves have been recognized in iran (ghorbani, 2013). the atashkuh fluorite-barite (±sulfide) deposit is one of four occurrences located south of the city of delijan in markazi province, about 80 km se of arak city. the atashkuh deposit occurs between the central iran structural zone on the north and the sa...

nakhlak lead mine is located at the nakhlak mountain 55 km ne of anarak town in isfahan province. the mineralogy is simple; galena and barite are the main primary minerals and cerussite is the main secondary mineral. sphalerite, pyrite, chalcopyrite, tetrahedrite-tennantite and acanthite occur as minor and trace mineral inclusions in galena. secondary minerals are anglesite, plattnerite, wulfen...

The Duna Pb-Ba-(Ag) mine is located ca. 155 km north of Tehran in the central Alborz structural zone, northern Iran. ore mineralization occurs as stratabound, epigenetic, E-W and WSWENE trending veins veinlets fracture-controlled well massive open-space filling textures within a Permian dolomitic limestone host rock. Field observations mineralogical petrographic studies show dolomitization, sil...

*Correspondence: Ondra Sracek, Department of Geology, Faculty of Science, Palacký University in Olomouc, 17. Listopadu 1192/12, 771 46 Olomouc, Czech Republic e-mail: [email protected] Mine tailings in African countries Zambia and Namibia have been investigated with an objective to determine the role of secondary hematite in immobilization of contaminants. Two sites, Chambishi and Mindolo, are ...

Bastnaesite, a rare-earth fluocarbonate, was found in the Mountain Pass district in April 1949. Subsequent geologic mapping has shown that rare-earth mineral deposits occur in a belt about 6 miles long and iy2 miles wide. One of the deposits, the Sulphide Queen carbonate body, is the greatest concentration of rare-earth minerals now known in the world. The Mountain Pass district is in a block o...

Within the investigation of historical paintings, portable X-ray fluorescence (XRF) can successfully be used for a non-invasive screening that involves basically describe inorganic pigments and locate repaints, retouches and surface alterations. In combination with imaging techniques, e.g., IR-reflectography, such a screening could effectively reduce further sampling and select areas important ...