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gorceixite

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Journal Article

THE SYMMETRY AND CRYSTAL STRUCTURE OF GORCEIXITE, BaAl 3 [PO 3 (O,OH)] 2 (OH) 6 , A MEMBER OF THE ALUNITE SUPERGROUP Available to Purchase

Tashia J. Dzikowski, Lee A. Groat, John L. Jambor
Published: 01 August 2006
The Canadian Mineralogist (2006) 44 (4): 951–958.
DOI: https://doi.org/10.2113/gscanmin.44.4.951
...Tashia J. Dzikowski; Lee A. Groat; John L. Jambor Abstract The crystal structure of the Ba–Al phosphate mineral gorceixite, a 7.0538(3), c 17.2746(6) Å, V 744.4(2) Å 3 , space group R 3̅ m , Z = 3, has been refined to an R 1 index of 2.3% on the basis of 253 unique reflections measured using Mo K...
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View PDF for article title, THE SYMMETRY AND CRYSTAL STRUCTURE OF <span class="search-highlight">GORCEIXITE</span>, BaAl 3 [PO 3 (O,OH)] 2 (OH) 6 , A MEMBER OF THE ALUNITE SUPERGROUP
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Journal Article

Exotic aluminium phosphates, natromontebrasite, brazilianite, goyazite, gorceixite and crandallite from rare-element pegmatites in Namibia Available to Purchase

J. R. Baldwin, P. G. Hill, O. von Knorring, G. J. H. Oliver
Published: 01 December 2000
Mineralogical Magazine (2000) 64 (6): 1147–1164.
... almost completely replaced by brazilianite which has also been found to contain not only crandallite but also its solid solution analogues: goyazite SrAl 3 (PO 4 ) 2 (OH) 5 ·H 2 O and gorceixite BaAl 3 (PO 4 ) 2 (PO 3 OH)(OH) 6 . Apatite is common at the contacts with montebrasite and associated minerals...
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View PDF for article title, Exotic aluminium phosphates, natromontebrasite, brazilianite, goyazite, <span class="search-highlight">gorceixite</span> and crandallite from rare-element pegmatites in Namibia
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Journal Article

Gorceixite, a singular product of replacement in fossil bones from the Bauru Basin, Brazil Available to Purchase

J. M. V. Coutinho, D. Atencio, A. M. Coimbra, L. A. Fernandes
Published: 01 August 1999
The Canadian Mineralogist (1999) 37 (4): 945–950.
View PDF for article title, <span class="search-highlight">Gorceixite</span>, a singular product of replacement in fossil bones from the Bauru Basin, Brazil
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Journal Article

Ferrazite is identical to gorceixite Free

D. Atencio, A. M. Clark
Published: 01 October 1996
Mineralogical Magazine (1996) 60 (5): 841–842.
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Journal Article

Gorceixite in topaz greisen assemblages, Silvermine area, Missouri Available to Purchase

Mark Taylor, Robert W. Smith, Bruce A. Ahler
Published: 01 October 1984
American Mineralogist (1984) 69 (9-10): 984–986.
...Mark Taylor; Robert W. Smith; Bruce A. Ahler Abstract Gorceixite [(Ba,Sr)Al 3 (PO 4 ) 2 (OH,F) 5 · H 2 O] occurs in the final stage of mineralization in greisenized breccias at the Ozark mine, Silvermine area, Missouri. The greisen assemblage consists of quartz-topaz-sericite with wolframite...
View PDF for article title, <span class="search-highlight">Gorceixite</span> in topaz greisen assemblages, Silvermine area, Missouri
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Journal Article

Gorceixite from Dale County, Alabama Available to Purchase

Charles Milton, J. M. Axelrod, M. K. Carron, F. Stearns Macneil
Published: 01 August 1958
American Mineralogist (1958) 43 (7-8): 688–694.
View PDF for article title, <span class="search-highlight">Gorceixite</span> from Dale County, Alabama
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Journal Article

Occurrence of gorceixite in Arkansas Available to Purchase

Edward J. Young
Published: 01 August 1958
American Mineralogist (1958) 43 (7-8): 762–765.
...Edward J. Young Abstract An unusual occurrence of radially fibrous botryoidal gorceixite, BaAl 3 (PO 4 ) 2 (OH) 5 · H 2 O, has been found in sec. 16, T. 2 S., R. 18 W., 6 miles from Hot Springs, Garland County, Arkansas. Material collected in July 1956, by the Arkansas Geological and Conservation...
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Journal Article

RARE PHOSPHATES FROM THE SUROVEC TOPAZ – Li-MICA MICROGRANITE, GEMERIC UNIT, WESTERN CARPATHIANS, SLOVAK REPUBLIC: ROLE OF F/H 2 O OF THE MELT Available to Purchase

Igor Petrík, Michal Kubiš, Patrik Konečný, Igor Broska, Pavol Malachovský
Published: 01 April 2011
The Canadian Mineralogist (2011) 49 (2): 521–540.
DOI: https://doi.org/10.3749/canmin.49.2.521
... granite massifs. Besides phenocrystic topaz and zinnwaldite, the microgranite matrix contains a characteristic assemblage of rare aluminophosphates (arrojadite, lacroixite, viitaniemiite), goyazite and gorceixite, along with late apatite. The assemblage is unusual in granitic rocks; it formed as a result...
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View PDF for article title, RARE PHOSPHATES FROM THE SUROVEC TOPAZ – Li-MICA MICROGRANITE, GEMERIC UNIT, WESTERN CARPATHIANS, SLOVAK REPUBLIC: ROLE OF F/H 2 O OF THE MELT
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ELECTRON-MICROPROBE-DERIVED COMPOSITION OF THE SINGLE CRYSTAL OF GORCEIXITE... Available to Purchase

Published: 01 August 2006
TABLE 1. ELECTRON-MICROPROBE-DERIVED COMPOSITION OF THE SINGLE CRYSTAL OF GORCEIXITE USED IN THIS STUDY
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GORCEIXITE: DATA COLLECTION AND STRUCTURE-REFINEMENT INFORMATION Available to Purchase

Published: 01 August 2006
TABLE 2. GORCEIXITE: DATA COLLECTION AND STRUCTURE-REFINEMENT INFORMATION
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ATOM PARAMETERS FOR GORCEIXITE Available to Purchase

Published: 01 August 2006
TABLE 3. ATOM PARAMETERS FOR GORCEIXITE
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SELECTED INTERATOMIC DISTANCES (Å) AND ANGLES (°) IN GORCEIXITE Available to Purchase

Published: 01 August 2006
TABLE 4. SELECTED INTERATOMIC DISTANCES (Å) AND ANGLES (°) IN GORCEIXITE
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Coordination polyhedra of cations in the gorceixite structure, projected onto (100). The atomic displacement ellipsoids represent 75% probability.

Coordination polyhedra of cations in the gorceixite structure, projected on... Available to Purchase

Published: 01 August 2006
F ig . 1. Coordination polyhedra of cations in the gorceixite structure, projected onto (100). The atomic displacement ellipsoids represent 75% probability.
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BOND-VALENCE * ANALYSIS OF GORCEIXITE Available to Purchase

Published: 01 August 2006
TABLE 5. BOND-VALENCE * ANALYSIS OF GORCEIXITE
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The structure of gorceixite projected onto (a) (100) and (b) (001), showing Al3+O2(OH)4 octahedra, PO4 tetrahedra, H atoms (large spheres), and Ba atoms (ellipsoids). The atomic displacement ellipsoids represent 50% probability.

The structure of gorceixite projected onto (a) (100) and (b) (001), showing... Available to Purchase

Published: 01 August 2006
F ig . 2. The structure of gorceixite projected onto (a) (100) and (b) (001), showing Al 3+ O 2 (OH) 4 octahedra, PO 4 tetrahedra, H atoms (large spheres), and Ba atoms (ellipsoids). The atomic displacement ellipsoids represent 50% probability.
Image
The structure of gorceixite projected onto (a) (100) and (b) (001), showing Al3+O2(OH)4 octahedra, PO4 tetrahedra, H atoms (large spheres), and Ba atoms (ellipsoids). The atomic displacement ellipsoids represent 50% probability.

The structure of gorceixite projected onto (a) (100) and (b) (001), showing... Available to Purchase

Published: 01 August 2006
F ig . 2. The structure of gorceixite projected onto (a) (100) and (b) (001), showing Al 3+ O 2 (OH) 4 octahedra, PO 4 tetrahedra, H atoms (large spheres), and Ba atoms (ellipsoids). The atomic displacement ellipsoids represent 50% probability.
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(a) Backscattered image showing point analyses of goyazite and gorceixite in the light coloured areas, Sr-rich goyazite in the darkest areas and apatite (A) in the medium grey areas. (b) Backscattered image showing point analyses across a phase of crandallite-goyazite. The unstable nature of the material is shown by the prominent ‘burn marks’. (Backscattered imaging performed at the University of Edinburgh.)

( a ) Backscattered image showing point analyses of goyazite and gorceixite... Available to Purchase

Published: 01 December 2000
F ig . 4. ( a ) Backscattered image showing point analyses of goyazite and gorceixite in the light coloured areas, Sr-rich goyazite in the darkest areas and apatite (A) in the medium grey areas. ( b ) Backscattered image showing point analyses across a phase of crandallite-goyazite. The unstable
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Triangular diagram for goyazite-gorceixite-crandallite.

Triangular diagram for goyazite-gorceixite-crandallite. Available to Purchase

Published: 01 December 2000
F ig . 5. Triangular diagram for goyazite-gorceixite-crandallite.
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(a–f) BSE-SEM images showing: (a) an altered ilmenite crystal (I) filled with a newly formed anatase layer and Fe oxides; (b,c) altered ilmenite crystals; ilmenite is depleted in Fe and the development of parallel anatase layers (arrows) is easily recognized; (d,e) close-up view of an altered ilmenite crystal; Fe is depleted and the space between anatase layers (arrows) is filled with halloysite tubes and laths (H); (f) crandallite-goyazite-gorceixite; (g) SEM image showing crandallite-goyazite-gorceixite (CGG) along with halloysite.

(a–f) BSE-SEM images showing: (a) an altered ilmenite crystal (I) filled wi... Available to Purchase

Published: 01 October 2009
of an altered ilmenite crystal; Fe is depleted and the space between anatase layers (arrows) is filled with halloysite tubes and laths (H); (f) crandallite-goyazite-gorceixite; (g) SEM image showing crandallite-goyazite-gorceixite (CGG) along with halloysite.
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F ig . 7. SEM micrographs of aluminum-phosphate-sulfate and aluminum-... Available to Purchase

Published: 01 May 2000
-solution series (alunite = 41%, crandallite = 6%, alunogen + aluminite = 53%). e. alunite-gorceixite solid-solution series (alunite = 36%, gorceixite = 42%, alunogen + aluminite = 19%). f. alunite-goyacite solid-solution series (alunite = 71%, goyacite = 20%, alunogen + aluminite