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Rutilated quartz used as a gemstone. Rutilated quartz is a variety of quartz which contains acicular (needle-like) inclusions of rutile. [1] It is used for gemstones. These inclusions mostly look golden, but they also can appear silver, copper red or black. The inclusions may be distributed randomly or in bundles, which sometimes are arranged ...
Rutile is a common accessory mineral in high-temperature and high-pressure metamorphic rocks and in igneous rocks. Thermodynamically, rutile is the most stable polymorph of TiO 2 at all temperatures, exhibiting lower total free energy than metastable phases of anatase or brookite. [7] Consequently, the transformation of the metastable TiO 2 ...
Dumortierite quartz is blue colored quartz containing abundant dumortierite inclusions. Dumortierite was first described in 1881 for an occurrence in Chaponost, in the Rhône - Alps of France and named for the French paleontologist Eugène Dumortier (1803–1873). [5] It typically occurs in high temperature aluminium rich regional metamorphic ...
Quartz. Quartz is a hard, crystalline mineral composed of silica (silicon dioxide). The atoms are linked in a continuous framework of SiO 4 silicon–oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO 2. Quartz is, therefore, classified structurally as a framework silicate mineral ...
Varieties of the mineral Quartz. Subcategories. ... Rutilated quartz; S. Shocked quartz This page was last edited on 28 November 2020, at 10:13 ...
Rutilated quartz; S. Smoky quartz; Striped flint; T. Tiger's eye This page was last edited on 30 May 2016, at 23:29 (UTC). Text is available under the ...
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