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Pyrite cubic crystals on marl from Navajún, La Rioja, Spain (size: 95 by 78 millimetres [3.7 by 3.1 in], 512 grams [18.1 oz]; main crystal: 31 millimetres [1.2 in] on edge) Pyrite's metallic luster and pale brass-yellow hue give it a superficial resemblance to gold , hence the well-known nickname of fool's gold .
Sperrylite on chalcopyrite with magnetite, Oktyabersky Mine, Norilsk.Field of view 2.2 cm. Sperrylite is a platinum arsenide mineral with the chemical formula PtAs 2 and is an opaque metallic tin white mineral which crystallizes in the isometric system with the pyrite group structure.
Lazurite is a product of contact metamorphism of limestone and is typically associated with calcite, pyrite, diopside, humite, forsterite, hauyne and muscovite. [ 2 ] Other blue minerals, such as the carbonate mineral, azurite , and the phosphate mineral, lazulite , may be confused with lazurite, but are easily distinguished with careful ...
Pyrrhotite (pyrrhos in Greek meaning "flame-coloured") is an iron sulfide mineral with the formula Fe (1-x) S (x = 0 to 0.125). It is a nonstoichiometric variant of FeS, the mineral known as troilite. Pyrrhotite is also called magnetic pyrite, because the color is similar to pyrite and it is
Thus, the ideal formula one would expect for a spinel like carrollite is Cu 2+ Co 3+ 2 S 2− 4, but as in the case of copper sulfides in general the oxidation state of the copper atom is 1+, not 2+. An assignment of valences as Cu + Co 3+ 2 S 1.75− 4 is more appropriate; this was confirmed in a study of 2009. [ 11 ]
Marc Rebillet (French pronunciation:; born December 15, 1988) is an American electronic musician and YouTuber from Dallas, Texas, currently based in New York City.Rebillet is known for his improvised funk and hip-hop electronic music with free flowing, humorous lyrics. [2]
Talking to Americans logo, based on the opening of This Hour Has 22 Minutes.This is the five images shown in this order, which represents the feature. Talking to Americans was a regular feature presented by Rick Mercer on the Canadian political satire show This Hour Has 22 Minutes, which was later spun off into a one-hour special that aired on April 1, 2001 on CBC Television.
The company was the largest mining company in Norway in the aftermath of World War I, and was among the world's largest pyrite producers. After closing of the mining operations in 1987, the company developed into the holding company Orkla ASA, which is among the largest companies at Oslo Stock Exchange. [1]