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  • Sanidine - Wikipedia
    Sanidine is the high temperature form of potassium feldspar with a general formula K(AlSi 3 O 8) [2] Sanidine is found most typically in felsic volcanic rocks such as obsidian , rhyolite and trachyte
  • Sanidine: Mineral information, data and localities. - mindat. org
    Petrologically, intermediates in this series from 10% up to 36% K-feldspar were termed anorthoclase, and anything from 36 - 100% K-feldspar was termed sanidine, even where Na>K With current classifications, the name anorthoclase is discontinued and the intermediates should be called either albite (if Na>K) or sanidine (if K>Na)
  • Sanidine Mineral Physical - Optical Properties, Uses and Occurrence
    A widespread mineral, sanidine occurs in feldsparand quartz-rich volcanic rocks, such as rhyolite, phonolite, and trachyte It is also found in eclogites, contact metamorphic rocks , and metamorphic rocks formed at low pressure and high temperature
  • Sanidine - Clark Science Center
    At 10x magnification the sanidine is too large for a complete view of the crystal, but the fine matrix surrounding it allows clear distinction of its boundaries and shape Click on image to view the slight zoning visible on the underside of the crystal
  • Sanidine | Silicate, Feldspar, Alkali | Britannica
    sanidine, alkali feldspar mineral, a high-temperature form of potassium aluminosilicate (KAlSi 3 O 8) that sometimes occurs in surface rocks Sanidine forms colourless or white, glassy, transparent crystals in acidic volcanic rocks
  • Sanidine Gem Guide and Properties Chart - Gemstones. com
    This Sanidine gemstone guide lists qualities of the Sanidine gem type, including stone colors, common names, meanings, gemstone hardness and more
  • Sanidine (K Na)(Al Si)4O8 - Handbook of Mineralogy
    Polymorphism Series: High sanidine forms a series with high albite Mineral Group: Feldspar (alkali) group; (Al,Si) completely disordered Occurrence: Most common in felsic volcanic and hypabyssal rocks as rhyolites, phonolites,
  • Sanidine Mineral Data
    Sanidine Comments: Blocky, opalescent crystal of sanidine Location: Mina La Pili, Carmago, Chihuahua, Mexico Scale: Crystal size 3x2 cm © Dave Barthelmy
  • SANIDINE Definition Meaning - Merriam-Webster
    The meaning of SANIDINE is a variety of orthoclase in often transparent crystals in eruptive rock (as trachyte) that is thought to form at higher temperatures than adularia —called also glassy feldspar
  • The Mineral sanidine - The Mineral and Gemstone Kingdom
    Detailed description, properties, locality information guide about the potassium feldspar mineral sanidine
  • Sanidine - Details and Facts
    Sanidine is a high-temperature form of potassium feldspar, which crystallizes at temperatures above 900°C It is usually colorless or white, but it can also be gray, yellow, or pink The mineral has a glassy luster and a hardness of 6 on the Mohs scale
  • Sanidine - Encyclopedia
    Sanidine is the alkaline feldspar of acidic volcanic rocks and intermediates where it commonly forms beautiful white or gray crystals, vitreous, often cracked It has a more disorderly structure than orthoclase or microcline ; sodium can replace potassium in significant proportions
  • SANIDINE (Potasium Aluminum Silicate) - Amethyst Galleries
    Chemistry: KAlSi 3 O 8, Potasium Aluminum Silicate Uses: mineral specimens and in the porcelain industry Sanidine is a polymorph of other minerals that share the same chemistry but have different crystal structures
  • 40 Facts About Sanidine
    Sanidine, a fascinating mineral, often catches the eye of geologists and rock enthusiasts alike But what exactly is sanidine? This mineral, a type of feldspar, forms in volcanic rocks at high temperatures Its glassy appearance and unique crystal structure make it a subject of study and admiration
  • Sanidine: Versatile Mineral
    Sanidine is a mineral belonging to the feldspar group, which is one of the most abundant mineral groups on Earth It has a chemical composition similar to other feldspars, primarily composed of aluminum, silicon, and oxygen, with the addition of potassium





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