Kermesite
General Information: Sb2S2O (Molecular Weight = 323.63 gm) Antimony 75.24 % Sb Sulfur 19.82 % S Oxygen 4.94 % O Sb2S2O Name from kermes, a name given from the Persian qurmizq, "crimson" in the older chemistry to red amorphous antimony trisulphide, often mixed with antimony trioxide. Physical Properties: [100] Perfect violet red, cherry red, or red. 4.5 - 4.6, Average = 4.55 Translucent to Opaque Fibrous - Crystals made up of fibers., Acicular - Occurs as needle-like crystals., Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite) 1.5-2 - Talc-Gypsum None. Adamantine brownish red More details... | ||||
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Red antimony definition was found in categories: Language, Idioms & Slang(1) Encyclopedia(1)
Red antimony Definition from Language, Idioms & Slang Dictionaries & Glossaries
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red antimony
red antimony
red ash n : smallish american tree with velvety branchlets and lower leaf surfaces [syn: downy ash, fraxinus pennsylvanica]
red antimony
red ash n : smallish american tree with velvety branchlets and lower leaf surfaces [syn: downy ash, fraxinus pennsylvanica]
Red antimony Definition from Encyclopedia Dictionaries & Glossaries
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Kermesite
Kermesite or antimony oxysulfide is also known as red antimony (Sb2S2O) . The name kermesite is a name derived from the Persian qurmizq, which later became "crimson" and was given to the mineral’s color which ranges from cherry red to a deep red bordering on black. Kermesite is the result of partial oxidation between stibnite (Sb2S3) and other antimony oxides such as valentinite (Sb2O3) or stibiconite (Sb3O6(OH)). Under certain conditions with oxygenated fluids the transformation of all sulfur to oxygen would occur but kermesite occurs when that transformation is halted.
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