Mineral forms in rhizosphere and bulk substrate were examined for selected plant species (Cardaminopsis arenosa, Calamagrostis epigeios, Deschampsia caespitosa, Festuca ovina, Silene vulgaris, Viola tricolor) growing spontaneously in the close vicinity of a tailings pond and in a zone of eolian transmission of waste particles. Samples of substrates and plant roots were taken from sites in the B...

Silver-bearing zinc-iron tetrahedrite-tennantite and freibergit fahlores approximating the simplified formula (Ag,Cu)m(Fe,Zn)2(As,Sb)4S~3 have been equilibrated with excess electrum (AuxAgl_~) and chalcopyrite + pyrite + iron-bearing sphalerite (CuFeS2 + FeS2 + Fe0.05Zn0.95S) in evacuated silica tubes at 300 ~ in reversed silver-copper exchange experiments with less than 0.1 mg NH4CI added as a...

Nanometre-sized inorganic dots, wires and belts have a wide range of electrical and optical properties, and variable mechanical stability and phase-transition mechanisms that show a sensitive dependency on size, shape and structure. The optical properties of the semiconductor ZnS in wurtzite structures are considerably enhanced, but the lack of structural stability limits technological applicat...

Native lead, a rare mineral, occurs in a late-stage vein in the world’s largest lead – zinc – silver deposit, at Broken Hill, Australia. The lead-bearing vein consists mainly of laumontite, quartz, biotite and muscovite, together with minor amounts of lead, galena, sphalerite, molybdenite, and rare allanite-(Ce). Three types of fluid inclusions have been identified: two-phase brine inclusions l...

The geochemical behavior of zinc, lead and copper from sulfidic tailings in a mine site with potential to generate acidic drainage (pyrite (55%) and sphalerite (2%)) is reported in this paper. The mining area is divided in two zones, considering the topographic location of sampling points with respect to the tailings pile: (a) outer zone, out of the probable influence of acid mine drainage (AMD...

There are many phenomena in nature, such as earthquakes, landslides, floods, and large-scale mineralization that are characterized by singular functions exhibiting scale invariant properties. A local singularity analysis based on multifractal modeling was developed for detection of local anomalies for mineral exploration. An iterative approach is proposed in the current paper for improvement of...

Roasting of sulfide ores to produce sulfuric acid began on an industrial scale in the middle 1800′s and is still used extensively worldwide. The residual, pyrite cinders, have commonly been disposed environment where they pose a potential serious threat aquatic life. In this project, two profiles cinder deposit Bergvik, Sweden, sampled comprehensive mineralogical characterization carried out. o...

The Huoshaoyun zinc–lead deposit, a giant non-sulfide deposit in Xinjiang, is one of the most significant discoveries China and globally recent years. dominated by non-sulfides, with minor occurrences sulfides such as sphalerite, galena, pyrite. minerals include smithsonite, cerussite, anglesite, Fe-oxide. This study focuses on mineralogical characteristics sulfide ores, well trace element Mine...

The results of the study rare-metal (Bi, Te, Se. Be, In) mineralization skarn deposits (Sn, Zn) in Pitkäranta Mining District, genetically related to Salmi anorthosite-rapakivi granite batholiths Early Riphean age are reported. Minerals and their chemical composition were identified on base optical microscopy as well electron microanalysis. diversity ore (native metals, oxides, hydroxides, carb...

Abstract Various genetic models have been proposed for the supergiant Proterozoic Broken Hill Pb–Zn–Ag deposit largely based on geological and geochronological evidence. Here we present Zn, Cd S isotope compositions as well Zn/Cd ratios of sphalerite from minor Hill-type deposits (Australia) to help constrain these but focus syngenetic magmatic–hydrothermal processes, since epigenetic can be re...