Lead isotope analysis of galena and alkali feldspars from the Albtal granite indicates a non-granitic origin of the Hermangang mineralization. Therefore it was not possible to prove that the mineralization is of intraformal and hydrothermal origins. In many mining districts the unadequate disposal of tailings has led to contamination by heavy metals and arsenic with unknown dimensions in soils and groundwater. The present work is the first of its kind to be carried out in this area. It is a very good example for the many polymetallic deposits located in the semiarid regions of Middle and North Mexico.
Effective transport is by wind and surface waterflow after strong rains.
The fate of haevy metals and As in the calic to gypsic Xerosoils was one of main research topics. Contributions to the Geochemistry of Arsenic This Publication covers three main items. Firstly, principles and special problems of the determination of arsenic are discussed using hydride generation technique. Lastly, the fate of the arsenic derived from mine tailings has been studied in soils. The interferences of other hydride forming elements on arsenic are investigated for the flow injection hydride generation technique.