It is shown that the antisymmetry of the sphalerite structure is isomorphous to the coloured diamond group Fd'3'm if sites associated with positive and negative charge are regarded as being equivalent except for colour. This methodology enables the multiplicity and polarity of external crystal surfaces to be deduced readily. In addition this analysis is shown to be very useful for the analysis ...

During the passage of atmospheric precipitates through porous dump body, products oxidation sulfide minerals are dissolved. As a result, underspoil waters with low pH values and significant amount dissolved metals formed. For most part, all types sewage produced by mining processing enterprises (underspoil, colliery, pit, drainage) combined before treatment, which leads to formation common wate...

Mississippi Valley-type (MVT) ore deposits arc epigenetic carbonate-hosted Pb-Zn deposits that contain galena, sphalerite, fluorite, bar&e, dolomite, calcite, and quartz. Although they are thought to form from basinal brines, their exact origins are still unclear, partly because of the scarcity of reliable geochronological data. Rb-Sr dating of sphalerites has recently been shown to be a promis...

The microbiological leaching of a sulfide ore sample was investigated in shake flask experiments. The ore sample contained pyrite, pyrrhotite, pentlandite, sphalerite, and chalcopyrite as the main sulfide minerals. The tests were performed at eight different temperatures in the range of 4 to 37 degrees C. The primary data were used for rate constant calculations, based on kinetic equations unde...

The Pb-Zn-Cu deposit of Ulldemolins occurs within the Carboniferous sedimentary series of the southernmost Catalonian Coastal Ranges. It consists of sulphide-bearing calc-silicate assemblages, with epidote, Ca-amphiboles and Ca-garnet, which develop selectively along a dolomicrite bed near the contact with a granite porphyry. Two mineralisation styles can be differentiated: a) banded and b) irr...

The thermal stability of ZnS nanowires grown in a Au/Pd-mediated vapor-liquid-solid manner was studied by using an X-ray diffractrometer equipped with an in-situ heating system. Using an in-situ heating X-ray system, we monitored the structural degradation of ZnS nanowires in the temperature range from 25 ◦C to 900 ◦C. From the X-ray diffraction data recorded from 25 ◦C to 900 ◦C, the as-synthe...