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A Amethyst crystals – a purple quartz Apophyllite crystals sitting right beside a cluster of peachy bowtie stilbite Aquamarine variety of beryl with tourmaline on orthoclase Arsenopyrite from Hidalgo del Parral, Chihuahua, Mexico Aurichalcite needles spraying out within a protected pocket lined by bladed calcite crystals Austinite from the Ojuela Mine, Mapimí, Durango, Mexico Ametrine ...
Mineral symbols are most commonly represented by three-lettered text symbols, although one-, two- and four-lettered symbols also exist. Four methods of nomenclature are used: [3] [5] The initial letters of a name, for example: cyanotrichite: Cya and mitscherlichite: Mits. A combination considered characteristic of the mineral name, for example ...
Crystal structure. Crystal structure of table salt (sodium in purple, chlorine in green) In crystallography, crystal structure is a description of the ordered arrangement of atoms, ions, or molecules in a crystalline material. [1] Ordered structures occur from the intrinsic nature of the constituent particles to form symmetric patterns that ...
A silicate mineral is generally an inorganic compound consisting of subunits with the formula [SiO 2+n] 2n−. Although depicted as such, the description of silicates as anions is a simplification. Balancing the charges of the silicate anions are metal cations, M x+. Typical cations are Mg 2+, Fe 2+, and Na +.
The band was formed in January 1993, by bassist and vocalist Dejan Gvozden and guitarist Željko Markuš, who, having performed blues and rock standards in Belgrade cafes, were joined by drummer Dejan Kostić. By the time the band had written their first hit song "Dva metra" ("Two Meters"), for which the music video was directed by Milutin ...
Phosphate minerals are minerals that contain the tetrahedrally coordinated phosphate (PO 43−) anion, sometimes with arsenate (AsO 43−) and vanadate (VO 43−) substitutions, along with chloride (Cl − ), fluoride (F − ), and hydroxide (OH −) anions, that also fit into the crystal structure . The phosphate class of minerals is a large ...
A rare-earth mineral contains one or more rare-earth elements as major metal constituents. Rare-earth minerals are usually found in association with alkaline to peralkaline igneous complexes in pegmatites. This would be associated with alkaline magmas or with carbonatite intrusives. Perovskite mineral phases are common hosts to rare-earth ...
Stibnite. Realgar. The sulfide minerals are a class of minerals containing sulfide (S 2−) or disulfide ( S2− 2) as the major anion. Some sulfide minerals are economically important as metal ores. The sulfide class also includes the selenides, the tellurides, the arsenides, the antimonides, the bismuthinides, the sulfarsenides and the ...
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