halotrichite

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Halotrichite - Wikipedia
Halotrichite, also known as feather alum, is a highly hydrated sulfate of aluminium and iron. Its chemical formula is FeAl 2 (SO 4 ) 4 ·22H 2 O. en.wikipedia.org
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Halotrichite: Mineral information, data and localities.
Colourless to white, yellowish, greenish; colourless in transmitted light. Streak: White. Hardness: 1½ - 2 on Mohs scale. Tenacity: Brittle. Cleavage: Poor ... www.mindat.org
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Halotrichite Mineral Data - Mineralogy Database
Halotrichite's chemical formula is Fe++Al2(SO4)4•22(H2O), with a molecular weight of 890.40 gm. It is also known as 'hairy salt' and has a density of 1.84. webmineral.com
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halotrichite
halotrichite Min. (hæˈlɒtrɪkaɪt) [Named by Glocker, 1839, f. as prec. + -ite.] Iron alum, occurring in yellowish-white, fibrous masses.1849 Nicol Min. 323. 1868 Dana Min. (ed. 5) 654 Halotrichite, Silky fibrous. Yellowish-white. Taste inky-astringent. 1875 Plattner Blowpipe 208 Halotrichite fuses in... Oxford English Dictionary
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Halotrichite | Sulfate Mineral, Copper-Iron, Evaporite | Britannica
Halotrichite, a sulfate mineral containing aluminum and iron [FeAl 2 (SO 4 ) 4 ·22H 2 O]. If more than 50 percent of the iron has been replaced by magnesium, www.britannica.com
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Halotrichite - Minerals - WGNHS
Halotrichite usually forms as crusts on sulfide minerals during weathering. It is a water soluble mineral that does not survive long in Wisconsin's climate. home.wgnhs.wisc.edu
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[PDF] Halotrichite - Handbook of Mineralogy
Polymorphism & Series: Forms a series with pickeringite. Mineral Group: Halotrichite group. Occurrence: As efflorescences in weathering sulfide deposits and ... www.handbookofmineralogy.org
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HALOTRICHITE Definition & Meaning - Merriam-Webster
The meaning of HALOTRICHITE is a mineral FeAl2(SO4)4.22H2O consisting of a hydrous iron aluminum sulfate. www.merriam-webster.com
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www.diagnosticpathology.eu Halotrichite
Classification: Halotrichite is an iron containing sulfate. Synonyms/Trade Names: Eisenalaun, Haarsalz. Chemistry/Composition: Fe2+Al2(SO4) ... www.diagnosticpathology.eu
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Halotrichite - Occurrence, Properties, and Distribution - AZoMining
Halotrichite can be identified in the field by its uneven, fractured surface and fibrous crystals. It occurs in a range of colors, from colorless to white, gray ... www.azomining.com
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halotrichine
halotrichine Min. (hæˈlɒtrɪkaɪn) [f. Gr. ἁλο- salt + θρίξ, τριχ- hair: see -ine.] A variety of halotrichite from the Solfatara, near Naples.1863–72 Watts Dict. Chem. III. 6. 1868 Dana Min. (ed. 5) 655. Oxford English Dictionary
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Ilsemannite
It is associated with gypsum, wulfenite, melanterite, halotrichite, molybdite, molybdenite, jordisite, and other oxidized uranium minerals; however, it wikipedia.org
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Copiapite
It occurs with melanterite, alunogen, fibroferrite, halotrichite, botryogen, butlerite and amarantite. wikipedia.org
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roemerite
roemerite Min. (ˈrɜːməraɪt) Also römerite. [ad. G. römerit (J. Grailich 1858, in Sitzungsber. d. K. Akad. d. Wissensch. in Wien XXVIII. 272), f. the name of Friedrich Adolph Römer (1809–69), German geologist: see -ite1.] A hydrated sulphate of ferrous and ferric iron, often containing zinc, which oc... Oxford English Dictionary
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Pickeringite
It forms a series with halotrichite. It forms as an alteration product of pyrite in aluminium rich rocks and in coal seams. wikipedia.org
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