Zinc in the flotation tailings pond of Brăteasa Valley (Suceava County, Romania)
Journal Title: Analele stiintifice ale Universitatii "Alexandru Ioan Cuza" din Iasi - seria Geologie - Year 2017, Vol 63, Issue 1
Abstract
The tailings pond located in Brăteasa Valley, near the former ore-processing plant of Tarnița, shows a particular shape of the beach, given the tailings stockpiles deposited on its northwestern sector. This geometry produced three types of waste: (i) tailings of the stockpiles (A-type); (ii) tailings from the lowlands (B-type), laying underneath the salt crusts; (iii) salt crusts, precipitated from the water puddles accumulated on the beach lowlands. Pyrite oxidation controls the pH of the three environments, so that the pyrite-poor B- and C-type wastes have a little higher pH (above 2.5) than type A. Descriptive statistics revealed that the distribution of Zn in the three types of waste is related to the following minerals: (i) sphalerite (in A-type waste); (ii) sphalerite and secondary minerals, i.e., jarosite, goethite, and ferrihydrite (in B-type waste); (iii) secondary minerals, i.e., rozenite, halotrichite, and kaolinite (in C-type waste). Zn-bearing secondary minerals that may trap Zn in their structure seems to appear at a pH higher than 2.5. The Principal Component Analysis (PCA) confirmed the influence of the nature of minerals (either primary or secondary) on the Zn distribution in the waste. It also showed that the amplitude of water evaporation from either tailings pores or shallows puddles accumulated on the lowlands would play a role in the Zn distribution.
Authors and Affiliations
Dan Stumbea
Early Cretaceous duvaliids (Belemnitida: Mollusca) of the Rarău Syncline (Eastern Carpathians, Romania)
The present paper focuses on the Early Cretaceous duvaliids of the Rarău Syncline, including the recently-sampled specimens from the grey marly matrix of the so-called “Gura Sadovei Breccia” and the previously-described...
Zinc in the flotation tailings pond of Brăteasa Valley (Suceava County, Romania)
The tailings pond located in Brăteasa Valley, near the former ore-processing plant of Tarnița, shows a particular shape of the beach, given the tailings stockpiles deposited on its northwestern sector. This geometry prod...
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