Bonding Schemes for Compounds with the Pyrite, Marcasite, and Arsenopyrite Type Structures.
نویسندگان
چکیده
منابع مشابه
the past hospitalization and its association with suicide attempts and ideation in patients with mdd and comparison with bmd (depressed type) group
چکیده ندارد.
Oxidation of Pyrite and Marcasite by Thiobacillus ferrooxidans Bacteria
This paper reports results of studies on the influence of the crystallographic mineral structure on the process of pyrite and marcasite leaching. Kinetic studies show that the crystallographic structure of minerals like FeS2 type does not influence the efficiency of the process.
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The crystal structure of glaucodot, (Co,Fe)AsS, an important member of the FeAsS-CoAsS-NiAsS system, was determined with single-crystal X-ray diffraction. It is orthorhombic with space group Pn21m and unit-cell parameters a = 14.158(1), b = 5.6462(4), c = 3.3196(2) Å, and V = 265.37(5) Å3. The structure is closely related to that of arsenopyrite or alloclasite, and represents a new derivative o...
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Despite the many advantages (e.g., suitable band gap, exceptional optical absorptivity, earth abundance) of pyrite as a photovoltaic material, its low open-circuit voltage (OCV) has remained the biggest challenge preventing its use in practical devices. Two of the most widely accepted reasons for the cause of the low OCV are (i) Fermi level pinning due to intrinsic surface states that appear as...
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ژورنال
عنوان ژورنال: Acta Chemica Scandinavica
سال: 1970
ISSN: 0904-213X
DOI: 10.3891/acta.chem.scand.24-2993