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variscite-metavariscite series

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Journal Article
Published: 01 November 1940
American Mineralogist (1940) 25 (11): 719–725.
...Duncan McConnell Abstract In 1916, W. T. Schaller (1) suggested the existence of the isodimorphous series, variscite-metavariscite. Until recently no additional data were available to test the validity of this premise, so it seemed desirable to investigate the supposed members of the series by x...
Journal Article
Published: 08 July 2020
Mineralogical Magazine (2020) 84 (4): 568–583.
...Uwe Kolitsch; Matthias Weil; Vadim M. Kovrugin; Sergey V. Krivovichev Abstract We report the crystal structures of four synthetic members of the variscite group (space group type Pbca ) and of bonacinaite, the first naturally occurring scandium arsenate member of the metavariscite group. All...
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Journal Article
Published: 01 October 2007
American Mineralogist (2007) 92 (10): 1695–1703.
...Kirsten Drüppel; Andreas Hösch; Gerhard Franz Abstract The system Al 2 O 3 -P 2 O 5 -H 2 O contains many phosphate minerals that occur in various geologic environments. The natural occurrence of variscite (AlPO 4 ·2H 2 O, orthorhombic), including its monoclinic polymorph metavariscite, is largely...
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Journal Article
Published: 01 November 2016
The Canadian Mineralogist (2016) 54 (6): 1513–1523.
.... It is associated with crandallite, fluorwavellite, montgomeryite, and variscite/metavariscite. The mineral occurs as colorless tapering blades, elongated parallel to [100], flattened on {001} and exhibiting the forms {100}, {010}, {001}, , and . The streak is white, the luster is vitreous, and crystals...
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Journal Article
Published: 01 May 2005
American Mineralogist (2005) 90 (5-6): 984–990.
...Georges Calas; Laurence Galoisy; Amonmat Kiratisin Abstract The color of variscite from three different localities (Pannecé, France; Sarrabus, Sardinia; Ervedosa, Portugal) and metavariscite from Utah was investigated by diffuse reflectance and EPR spectroscopy. These samples contain low levels...
FIGURES
Journal Article
Published: 01 December 2017
Mineralogical Magazine (2017) 81 (6): 1405–1429.
... shown the presence of: (1) four minerals of the turquoise group: turquoise, faustite, chalcosiderite and planerite; (2) other phosphates from different groups: wavellite, crandallite, goyazite, gorceixite, variscite, metavariscite, fluorapatite; and (3) other minerals: voltaite, adularia and quartz...
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Journal Article
Published: 01 May 2019
European Journal of Mineralogy (2019) 31 (3): 465–471.
... Edmund Basin situated within the Capricorn Orogen. Variscite and metavariscite occur in narrow veins that crosscut silicified shale and mudstone ( Fetherston et al ., 2013 ). Secondary phosphate minerals have replaced variscite veins in the oxidized zone at Mt. Deverell, where the phosphate was likely...
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Journal Article
Published: 01 June 2006
Mineralogical Magazine (2006) 70 (3): 281–290.
... phosphate belongs to the crystallographic class 2/ m and to the metavariscite group ( Ramdohr and Strunz, 1980 ). Occurrences of kolbeckite have been recorded from a few sites, such as Wilson Springs, Arkansas, USA, Gleichenberg, Styria, Austria, Baia Sprie, Romania and Sadisdorf-Erzgebirge, Germany...
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Journal Article
Published: 01 August 2012
The Canadian Mineralogist (2012) 50 (4): 933–942.
... of variscite and metavariscite AlPO 4 ·2H 2 O . Am. Mineral . 92 , 1695 - 1703 . Fransolet A.-M. ( 1989 ): The problem of Na–Li substitution in primary Li–Al phosphates: new data on lacroixite, a relatively widespread mineral . Can. Mineral . 27 , 211 - 217 . Fransolet A.-M. Fontan...
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Journal Article
Published: 01 October 2015
Mineralogical Magazine (2015) 79 (5): 1159–1173.
... ) 2 ·8H 2 O], torbernite [Cu(UO 2 ) 2 (PO 4 ) 2 ·8–12H 2 O], melanterite (FeSO 4 ·7H 2 O) and epsomite (MgSO 4 ·7H 2 O) Russia (Altgauzen and Kuznecova, 1971) Uraniferous laterites dominated by goethite, hematite and gibbsite, with minor quartz, kaolinite and metavariscite (AlPO 4 ·2H 2 O...
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Journal Article
Published: 01 October 2007
The Canadian Mineralogist (2007) 45 (5): 1307–1324.
... of a series of papers on the Gladstone–Dale relationship ( Mandarino 1976 , 1978 , 1979 , 1981 , 1989 ), the author published a paper on the Gladstone–Dale compatibility of natural and synthetic selenates and selenites ( Mandarino 1994 ). At that time, it was planned to publish a series of papers...
Journal Article
Published: 01 December 2012
The Canadian Mineralogist (2012) 50 (6): 1531–1554.
...) , frondelite grains are separated by an intimate microcrystalline intergrowth of montebrasite + quartz ( Figs. 5a, d ); larger hypidiomorphic crystals of montebrasite are common in this mixture ( Fig. 5a ). Strengite, Fe 3+ (PO 4 )•2H 2 O, forms a series with variscite, Al(PO 4 )•2H 2 O, and these two...
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Journal Article
Published: 01 November 2019
Russ. Geol. Geophys. (2019) 60 (11): 1267–1277.
..., barite, calcite, including magnesian one, aragonite, apatite, zeolites (mordenite, heulandite, laumontite, and stilbite), variscite, metavariscite, binary sulfides (pyrite, marcasite, cinnabar, etc.), ternary sulfides (chalcopyrite), etc. There are also soluble salts crystallizing at the surface of clay...
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Journal Article
Published: 01 January 2002
Reviews in Mineralogy and Geochemistry (2002) 48 (1): 123–253.
..., but significant advances have been made. Bragg (1930) classified the major rock-forming silicate minerals according to the type of polymerization of (Si,Al)O 4 tetrahedra, and this scheme was extended by Zoltai (1960) and Liebau (1985) ; it is notable that this scheme parallels Bowen’s reaction series...
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Journal Article
Published: 01 August 2014
Mineralogical Magazine (2014) 78 (4): 957–1027.
... known. The silicate minerals were of particular interest, both because of their importance in large-scale Earth processes and because of the polymerization of their constituent silicate and aluminosilicate groups. In his seminal work, Bowen ( 1928 ) proposed his ‘reaction series’ which describes...
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Journal Article
Published: 01 November 2017
American Mineralogist (2017) 102 (11): 2341–2347.
...-(CaMgMg) are crandallite, fluorwavellite, montgomeryite, and variscite/metavariscite. The secondary species in the same general assemblage include collinsite, gordonite, overite, and whitlockite. Whiteite-(CaMgMg) occurs as colorless tapering blades, elongated parallel to [100], flattened on {001...
Journal Article
Published: 01 May 2014
American Mineralogist (2014) 99 (5-6): 914–942.
... pairs of solid-solution series minerals with the same orthorhombic olivine-type structure ( Huminicki and Hawthorne 2002 ): ferrisicklerite-sickerlite [Li(Fe,Mn)PO 4 -Li(Mn,Fe)PO 4 ], heterosite-purpurite (FePO 4 -MnPO 4 ), and triphylite-lithiophilite (LiFePO 4 -LiMnPO 4 ). Natrophilite (NaMnPO 4...
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Journal Article
Published: 01 January 2014
Reviews in Mineralogy and Geochemistry (2014) 79 (1): 17–184.
... and Bortnikova (2005) collected discharging volcanic gases from the Mutnovsky volcano (Kamchatka, Russia) in silica tubes and allowed them to deposit the solid phases. They identified a series of phases as a function of the gas temperature. The As-containing phases included sulfosalts and sulfosalt-halides...
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