One of the main sources non-ferrous and precious metals is sulfide ores. This paper presents a review existing literature on electrochemical properties some most common industrial sulfides, such as pentlandite, chalcopyrite, sphalerite, galena, pyrrhotite, pyrite, etc. The study results surface redox transformations minerals, galvanic effect, cathodic oxygen reduction reaction sulfides are pres...

Abstract We tested the effects of Galena or Chinook hops treatment (6% wt/wt) simulated composts (13 d) wood chip litter (WCL) alone mixed 3:1 with ground Bluestem hay (BSH). Results revealed that net losses urea and ammonia in WCL composted without BSH (n = 3/treatment) were unaffected by (P 0.37 0.13, respectively), averaging 0.32 ± 0.7 0.03 1.5 µmol/g, respectively). The loss uric acid was 6...

Cretaceous kimberlites in southern Africa have been suggested to host deeply subducted material their mantle sources based on radiogenic isotope systematics. However, potential contributions the volatile budget, including sulfur, of these is unclear. Here we report new petrographic, geochemical, and isotopic data sulfides sulfates sub-volcanic from Kimberley, South Africa. The examined were div...

The concept of the mineral classification in the Mineral Powder Diffraction File (MPDF) is somewhat different from that used in classical mineralogical references. The goal of the classification is to exploit the crystal chemistry characteristics to the fullest to assist in the identification of mineral phases. The primary criterion is the similarity of the diffraction pattern, which results fr...

The Red Dog Zn-Pb deposits are hosted in organic-rich mudstone and shale of the Mississippian Kuna Formation. A complex mineralization history is defined by four sphalerite types or stages: (1) early brown sphalerite, (2) yellow-brown sphalerite, (3) red-brown sphalerite, and (4) late tan sphalerite. Stages 2 and 3 constitute the main ore-forming event and are volumetrically the most important....