Aguilarite, Ag4SeS, occurs in a hydrothermal vein deposit associated with sphalerite, chalcopyrite, galena, and native silver. Physical and chemical data agree with descriptions from Guanajuato (type locality). Differential thermal analysis of synthetic material indicates an inversion temperature of i22• T ~ The mineral crystallized late in the paragenetic sequence, probably slightly above 2oo ~

G. Y. Gao,1,* K. L. Yao,1,2,3,† E. Şaşıoğlu,4,‡ L. M. Sandratskii,5 Z. L. Liu,1 and J. L. Jiang1 1Department of Physics, Huazhong University of Science and Technology, Wuhan 430074, China 2CCAST (World Laboratory), P. O. Box 8730, Beijing 100800, China 3International Center of Materials Physics, Chinese Academy of Science, Shenyang 110015, China 4Institut für Festkörperforschung, Forschungszent...

This paper is an initial report on the mineral chemistry of four metamorphosed stratabound mineral deposits which are located within or adjacent to the Shuswap Complex. These are commonly referred t” as Cottonbelt, CK, Goldstream and Big I.edge deposits. Rock specimens were selected from those collected by Trygve H6y of the British Columbia Geological Survey Branch. The particular specimens cho...

Excited state relaxation in zinc sulfide (ZnS) nanoparticles is studied as a model for the fate of the excited state in inorganic nanoparticles in general. A series of time-dependent density functional theory optimisations on the S1 and T1 excited states predict the existence of not merely isolated minima, as found before, but rather a connected cascade of excited state minima ending up in a co...

We describe the anisotropy in the material removal rate (MRR) of the polycrystalline, chemical-vapor deposited zinc sulfide (ZnS). We define the polycrystalline anisotropy via microhardness and chemical erosion tests for four crystallographic orientations of ZnS: (100), (110), (111), and (311). Anisotropy in the MRR was studied under magnetorheological finishing (MRF) conditions. Three chemical...

Zinc sulfide [ZnS] thin films were deposited on glass substrates using radio frequency magnetron sputtering. The substrate temperature was varied in the range of 100°C to 400°C. The structural and optical properties of ZnS thin films were characterized with X-ray diffraction [XRD], field emission scanning electron microscopy [FESEM], energy dispersive analysis of X-rays and UV-visible transmiss...

Complex metal-organic frameworks used as precursors allow design and construction of various nanostructured functional materials which might not be accessible by other methods. Here, we develop a sequential chemical etching and sulfurization strategy to prepare well-defined double-shelled zinc-cobalt sulfide (Zn-Co-S) rhombic dodecahedral cages (RDCs). Yolk-shelled zinc/cobalt-based zeolitic im...

Interest for application of hydrometallurgical processes in a processing of complex sulphide ores and concentrates has increased in recent years. Their application provides better metal recoveries and reduced emission of gaseous and toxic ageneses in the environment. The kinetics and mechanism of sphalerite leaching from complex sulphide concentrate with sulphuric acid and sodium nitrate soluti...

LLE Review, Volume 142 110 Introduction Zinc sulfide (ZnS) is an infrared (IR) optical material widely used for applications such as IR windows, domes, and optical lenses.1 It is industrially produced by the chemical-vapor–deposition (CVD) technique to reach a dense, milky yellow–orange color, with +70% transmission in the mid-long-wave IR region.1 Its inner structure consists of cone-like stru...