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Terahertz spectroscopy and lattice vibrational analysis of pararealgar and orpiment
Chinese Physics B, 2022Terahertz time-domain spectroscopy (THz-TDS) is an effective nondestructive and noninvasive tool for investigating sulfur-containing pigments. Combined with Raman spectroscopy and vibrational mode analysis, it is significant for artifact identification and conservation. In this work, the terahertz absorption spectra of pararealgar (As4S4) and orpiment (
Ya-Wei Zhang +4 more
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Photographed by Ron Wolf.Fine glassy prisms of orange-red orpiment on a yellow-white matrix, Kabardino-Balkarian Republic, North Caucasus Region ...
Wolf, Ron
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Mineralogical Magazine and Journal of the Mineralogical Society, 1892
The crystalline form of orpiment was first determined by Mohs (Grundriss der Mineralogie (1824), 2, 613).His measurements, which he is careful to state were only approximate, gave an angle of 79°20' for the prism, and 83°7' for the brachydome; the plane of perfect cleavage being taken as the macropinakoid, and the crystals being referred to the ...
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The crystalline form of orpiment was first determined by Mohs (Grundriss der Mineralogie (1824), 2, 613).His measurements, which he is careful to state were only approximate, gave an angle of 79°20' for the prism, and 83°7' for the brachydome; the plane of perfect cleavage being taken as the macropinakoid, and the crystals being referred to the ...
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Thioarsenate formation upon dissolution of orpiment and arsenopyrite
Chemosphere, 2012Thioarsenates were previously determined as dominant species in geothermal and mineral waters with excess sulfide. Here, we used batch leaching experiments to determine their formation upon weathering or industrial leaching of the arsenic-sulfide minerals orpiment (As(2)S(3)) and arsenopyrite (FeAsS) under different pH and oxygen conditions.
Elke, Suess, Britta, Planer-Friedrich
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Structural stability and metallization of orpiment at high pressure
Physica ScriptaAbstract Binary arsenic sulfide compounds have garnered significant attention owing to their wide-ranging physical properties and promising potential in the domains of electronics and optoelectronics. As a naturally abundant and historically significant semiconductor mineral, orpiment (crystalline As2S3) has encountered limited ...
Tian Qin +6 more
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Orpiment and Realgar in Chinese Technology and Tradition
Journal of the American Oriental Society, 1955AMONG THE MINERAL PIGMENTS known to the Chinese since classical times the most important are the yellows,a the verditers,b ochreC and vermilion.d The present paper is devoted to the members of the class of mineral yellows in their material and spiritual relations throughout Chinese history.
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Orpiment mineralizations in tuffaceous dolomites in Allchar deposit-SEM_EDS investigations [PDF]
, 2018 Ore mineralization of Sb-As-Tl-Au in the Allchar deposit are localized in diferent type of lithological units like a tuffs, dolomites, silicified dolomites and tuffaceous dolomites. The tuffaceous dolomite (probably from the Tertiar) lie discordantly over the Mesozoic basic rocks in the larger part of the north and south-west parts of the region.
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