Alunite - Wikipedia Alunite is a hydroxylated aluminium potassium sulfate mineral, formula K Al 3 (S O 4) 2 (OH) 6 It was first observed in the 15th century at Tolfa, near Rome, where it was mined for the manufacture of alum First called aluminilite by J C Delamétherie in 1797, this name was contracted by François Beudant three decades later to alunite [8
Alunite: Mineral information, data and localities. - mindat. org Sato, Eriko, Nakai, Izumi, Miyawaki, Ritsuro, Matsubara, Satoshi (2009) Crystal structures of alunite family minerals: beaverite, corkite, alunite, natroalunite, jarosite, svanbergite, and woodhouseite
Alunite | Mineral, Description, Uses, Facts | Britannica Alunite, a widespread rock-forming sulfate mineral that occupies pockets or seams in volcanic rocks such as rhyolites, trachytes, and andesites, where it presumably formed through their chemical reaction with escaping sulfurous vapors
Alunite Mineral Information photos and Facts - Nevada Outback Gems Alunite is often found disseminated in the rocks or in well-defined veins Notable occurrences in the western USA are at Goldfield, Nevada; Marysvale, Utah; and the Rosita Hills, Colorado The alunite near Marysvale in Utah occurs in veins traversing andesites that are probably of Tertiary age
Alunite KAl3(SO4 2(OH)6 - Handbook of Mineralogy Mineral Group: Alunite group Occurrence: Formed between 15 C and 400 C by the action of sulfate, which may be generated from pyrite or solfataric action, on aluminous rocks, commonly accompanied by kaolinitization and silicification Association: Kaolinite, halloysite, diaspore, pyrite, gypsum, quartz
Alunite - Occurrence, Properties, and Distribution - AZoMining Alunite is a sulfate mineral first discovered in Monti della Tolfa, Rome in the 15 th century It is rarely found in the massive material cavities as distinct crystals It occurs as veins and replacement masses in rhyolite, trachyte and other potassium rich volcanic rocks
ALUNITE (Potassium Aluminum Sulfate Hydroxide) Alunite forms from the action of sulfuric acids upon potassium rich feldspars in a process called "alunitization" The sulfuric acids accompany hydrothermal solutions, usually rich in certain ore metals These solutions can result in large bodies of alunite, making alunite a rock forming mineral
Alunite – WGNHS – UW–Madison Alunite is an inconspicuous grayish massive mineral formed by the alteration of pyrite and other sulfides during weathering or solfatara activity It is probably widespread in Wisconsin but has so far been reported from only one locality
Alunite - an overview | ScienceDirect Topics Minerals of the alunite supergroup have the ability to incorporate many minor and trace elements into their crystal structure (Burger et al , 2009) A wide range of combinations of elements is possible in the A, B, and TO 4 sites