sulfur pyrites
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sulfur — /sul feuhr/, n. 1. Also, esp. Brit., sulphur. Chem. a nonmetallic element that exists in several forms, the ordinary one being a yellow rhombic crystalline solid, and that burns with a blue flame and a suffocating odor: used esp. in making… … Universalium
Sulfur dioxide — Chembox new Name = Sulphur dioxide ImageFileL1 = Sulfur dioxide 2D.svg ImageSizeL1 = 120 ImageFileR1 = Sulfur dioxide 3D vdW.png OtherNames = sulfur(IV) oxide; sulfurous anhydride Section1 = Chembox Identifiers CASNo = CASRN|7|4|4|6|0|9|5… … Wikipedia
pyrites — py|ri|tes [ paı,raıts ] noun uncount a hard substance found in rock that is a mixture of SULFUR (=a yellow element) and a metal, especially iron. It is also known as fool s gold because it looks very much like gold … Usage of the words and phrases in modern English
Iron-sulfur world theory — The iron sulfur world theory is a hypothesis for the origin of life advanced by Günter Wächtershäuser, a Munich chemist and patent lawyer, involving forms of iron and sulfur. [cite journal author = Russell MJ, Daniel RM, Hall AJ, Sherringham JA… … Wikipedia
SOUFRE — Le soufre est connu depuis les temps les plus reculés. Il est cité dans la Bible et dans L’Odyssée . Son nom vient du sanscrit sulvere qui a donné sulfur en latin. Ses usages anciens furent la désinfection et la poudre noire. Les impuretés… … Encyclopédie Universelle
pyrite — pyritic /puy rit ik, peuh /, pyritical, pyritous /peuh ruy teuhs, puy /, adj. /puy ruyt/, n. a very common brass yellow mineral, iron disulfide, FeS2, with a metallic luster, burned to sulfur dioxide in the manufacture of sulfuric acid:… … Universalium
Lithotroph — A lithotroph is an organism that uses an inorganic substrate (usually of mineral origin) to obtain reducing equivalents for use in biosynthesis (e.g., carbon dioxide fixation) or energy conservation via aerobic or anaerobic respiration.[1] Known… … Wikipedia
Environmental effects of coal — There are a number of adverse environmental effects of coal mining and burning.These effects include: * release of carbon dioxide and methane, both of which are greenhouse gases causing climate change and global warming according to the IPCC.… … Wikipedia
Economy of the Song Dynasty — The Song Dynasty (960 ndash;1279) of China was a period of Chinese history marked by commercial expansion, economic prosperity, and revolutionary new economic concepts. Private trade grew and a market economy began to link the coastal provinces… … Wikipedia
selenium — /si lee nee euhm/, n. Chem. a nonmetallic element chemically resembling sulfur and tellurium, occurring in several allotropic forms, as crystalline and amorphous, and having an electrical resistance that varies under the influence of light.… … Universalium
