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leucophosphite

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Journal Article
Published: 01 February 2008
American Mineralogist (2008) 93 (2-3): 483–487.
...V.G. de Resende; G.M. da Costa; E . De Grave; A. Van Alboom Abstract A Mössbauer study of synthetic leucophosphite, KFe 2 (PO 4 ) 2 (OH)·2H 2 O is reported. The sample was prepared by the reaction of synthetic goethite (α-FeOOH) with a K-phosphate solution of pH 2 at 373 K for 20 days...
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Journal Article
Published: 01 April 1984
American Mineralogist (1984) 69 (3-4): 374–376.
... with X = pale orange brown, Y = light purple, and Z = dark purplish red; absorption: Z > Y > X, X = b . Tinsleyite is associated with leucophosphite, rockbridgeite, tavorite, carbonate-apatite, and robertsite in highly altered triphylite pods in the pegmatite. Tinsleyite is chemically the Al...
Journal Article
Published: 01 October 1976
American Mineralogist (1976) 61 (9-10): 1027–1028.
Journal Article
Published: 01 October 1976
American Mineralogist (1976) 61 (9-10): 933–938.
Journal Article
Published: 01 April 1972
American Mineralogist (1972) 57 (3-4_Part_1): 397–410.
...Paul Brain Morre Abstract Leucophosphite, K 2 [Fe 3+ 4 (OH) 2 (H 2 O) 2 (PO 4 ) 4 ].2H 2 O. possesses an atomic arrangement based on a discrete octahedral tetramnr. The crystal cell criteria are 9.7S2(9), 9.658(9), 9.751(9)Å, β = 102.24(12)°, space group P 2 1 / n . The crystal structure was solved...
Journal Article
Published: 01 April 1964
American Mineralogist (1964) 49 (3-4): 377–386.
...George C. Simmons Abstract A sixth occurrence of leucophosphite, the third organic occurrence, is in a cave in the Serra do Tamanduá, Minas Gerais, Brazil. The mineral fills the central part of cavities, and, intimately mixed with limonite, it lines small cavities and coats wallrock of the cave...
Journal Article
Published: 01 April 1957
American Mineralogist (1957) 42 (3-4): 214–221.
...Marie Louise Lindberg Abstract At the Sapucaia pegmatite mine, Minas Gerais, Brazil, leucophosphite [KFe 2 ‴(PO 4 ) 2 (OH) · 2H 2 O] occurs sparingly as minute buff-colored crystals in vugs in frondelite. The optical constants are α = 1.707, β = 1.721, and γ = 1.739; biaxial positive; dispersion v...
Journal Article
Published: 05 June 2020
Mineralogical Magazine (2020) 84 (5): 705–711.
...Nikita V. Chukanov; Gerhard Möhn; Igor V. Pekov; Natalia V. Zubkova; Dmitry A. Ksenofontov; Dmitry I. Belakovskiy; Svetlana A. Vozchikova; Sergey N. Britvin; Joy Desor Abstract The new leucophosphite-group mineral ammoniotinsleyite is found in a guano deposit located on the Pabellón de Pica...
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Image
( a ) Projection of the structure of <b>leucophosphite</b>, showing the eight-ring...
Published: 01 February 2008
F igure 1. ( a ) Projection of the structure of leucophosphite, showing the eight-ring channels incorporating the K + cations (gray circles); ( b ) octahedral tetramer involving an edge-sharing dimer (Fe2) further linked by corner sharing to two other octahedrons (Fe1). White circles
Image
X-ray diffraction pattern of <b>leucophosphite</b>. The interplanar distances (Å)...
Published: 01 February 2008
F igure 2. X-ray diffraction pattern of leucophosphite. The interplanar distances (Å) for the peak position of the leucophosphite are indicated. Si points to the main peak of the added silicon.
Image
Effect of the temperature on the Mössbauer spectra of the <b>leucophosphite</b> s...
Published: 01 February 2008
F igure 4. Effect of the temperature on the Mössbauer spectra of the leucophosphite sample.
Image
The crystal structure of <b>leucophosphite</b>: (a) the [Fe 3+  4 (PO 4 ) 4 ϕ 12 ]...
Published: 01 January 2002
Figure 48. The crystal structure of leucophosphite: (a) the [Fe 3+ 4 (PO 4 ) 4 ϕ 12 ] cluster; (b) projected onto (100); (c) projected onto (010). (Fe 3+ ϕ 6 ) octahedra are cross/dot-shaded, K is shown as shaded circles.
Image
Perspective view of the octahedral arrangement in <b>leucophosphite</b>.
Published: 01 September 2001
F igure 1. Perspective view of the octahedral arrangement in leucophosphite.
Journal Article
Published: 01 June 2004
The Canadian Mineralogist (2004) 42 (3): 741–752.
... with colorless to purple-black fluellite, colorless wavellite, strengite–variscite, acicular maroon-to-red hewettite, and rare anatase, kazakhstanite, tinticite, leucophosphite, torbernite and tyuyamunite. Nevadaite is pale green to turquoise blue with a pale powder-blue streak and a vitreous luster; it does...
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Journal Article
Published: 01 December 1952
American Mineralogist (1952) 37 (11-12): 883–909.
... with dufrenite); and, most noteworthy, leucophosphite, hitherto known only from Western Australia. From chemical, optical, and x -ray data, together with a recent synthetic study, leucophosphite is established as a valid and well-defined mineral species and, so far, the only known alkali-iron phosphate mineral...
Journal Article
Published: 16 May 2019
The Canadian Mineralogist (2019) 57 (3): 363–370.
.... It was found in the dumps of the Sapucaia pegmatite, Sapucaia do Norte, Galiléia, Minas Gerais, Brazil by one of the authors (SV). The mineral occurs on the surfaces of hydrothermal cavities and is associated with frondelite, mangangordonite, and leucophosphite. It forms prisms weakly elongated along...
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Journal Article
Published: 01 April 2014
American Mineralogist (2014) 99 (4): 811–816.
..., frondelite, rockbridgeite, eosphorite, vivianite, fairfieldite, leucophosphite, cyrilovite, phosphosiderite, etc. Correianevesite occurs as grayish-brown to reddish-brown transparent bipyramidal crystals up to 4 mm in size. The streak is white, and the luster is vitreous. Mohs hardness is 3½. Cleavage...
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Journal Article
Published: 01 April 2014
The Canadian Mineralogist (2014) 52 (2): 373–397.
... crystallize during this second hydrothermal stage, strongly depend on the cations which are locally available in the sample zone. The final stage forms the meteoric species: leucophosphite and phosphosiderite directly replace heterosite, whereas vivianite, a ferrous meteoric species, only appears...
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Journal Article
Published: 01 April 2012
The Canadian Mineralogist (2012) 50 (2): 559–569.
... of the tinsleyite is suggested as a possible mineral species. We evaluate the crystal chemistry of the leucophosphite group of minerals and the related synthetic compounds. The leucophosphite group, with the formula AB 2 [PO 4 ] 2 (OH)·2H 2 O ( A = NH 4 , K; B = Al, Fe) includes, in addition...
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Journal Article
Published: 01 April 2011
Mineralogical Magazine (2011) 75 (2): 327–336.
... Coin, iangreyite occurs as thin, colourless to white or cream, hexagonal tablets up to 0.4 mm in diameter and 0.02 mm thick associated with meurigite-Na, plumbogummite, kidwellite, lipscombite, strengite, chalcosiderite, wardite, leucophosphite, wavellite, goethite, barite, quartz and F-rich perhamite...
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