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Journal Article

Alluaudites and Varulites Available to Purchase

D. Jerome Fisher
Published: 01 October 1957
American Mineralogist (1957) 42 (9-10): 661–664.
..., a mineral outside of this system. No success has been obtained in attempting to write a formula showing a simple coupling arrangement involving Ca-X and Na-Y. Thus the varulites are high in Na and low in Fe‴. Nevertheless it seems clear that these minerals are all members of one monoclinic isotypous series...
View PDF for article title, Alluaudites and <span class="search-highlight">Varulites</span>
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Photomicrographs of the main textures observed in the BWS association from the Cema pegmatite (plane-polarized light). a) Intergrowth of sicklerite and beusite. with development of interstitial staněkite. b) Same as a) along with olive-green qingheiite containing yellowish crystals of varulite. c) Olive-green qingheiite containing rounded crystals of sicklerite, generally surrounded by a rim of deep yellow varulite. d) Extensive replacement of sicklerite (orange relics) by deep yellow varulite, and with staněkite occurring interstitially. e) Same as b) along with an idiomorphic crystal of lazulite partly replaced by finegrained gormanite. Symbols: Sk: sicklerite, Wyl: wyllieite, Beu: beusite, Stk: staněkite, Lzl: lazulite, Vr: varulite, Gm: gormanite.

Photomicrographs of the main textures observed in the BWS association from ... Available to Purchase

Published: 01 August 2012
of varulite. c) Olive-green qingheiite containing rounded crystals of sicklerite, generally surrounded by a rim of deep yellow varulite. d) Extensive replacement of sicklerite (orange relics) by deep yellow varulite, and with staněkite occurring interstitially. e) Same as b) along with an idiomorphic crystal
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SAMPLE NUMBERS AND LOCALITIES FOR ALLUAUDITE, HAGENDORFITE, AND VARULITE Available to Purchase

Published: 26 May 2021
TABLE 4. SAMPLE NUMBERS AND LOCALITIES FOR ALLUAUDITE, HAGENDORFITE, AND VARULITE
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Vacancy versus Na (apfu) in alluaudite, hagendorfite, and varulite.

Vacancy versus Na ( apfu ) in alluaudite, hagendorfite, and varulite. Available to Purchase

Published: 26 May 2021
Fig. 2. Vacancy versus Na ( apfu ) in alluaudite, hagendorfite, and varulite.
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CHEMICAL COMPOSITIONS (wt.%) AND UNIT FORMULAE* ( apfu ) FOR ALLUAUDITE, HA... Available to Purchase

Published: 26 May 2021
TABLE 6. CHEMICAL COMPOSITIONS (wt.%) AND UNIT FORMULAE* ( apfu ) FOR ALLUAUDITE, HAGENDORFITE, AND VARULITE
Journal Article

Alluaudite-Group Phosphate and Arsenate Minerals Available to Purchase

Kimberly T. Tait, Frank C. Hawthorne, Norman M. Halden
Published: 26 May 2021
The Canadian Mineralogist (2021) 59 (1): 243–263.
DOI: https://doi.org/10.3749/canmin.2000057
...TABLE 4. SAMPLE NUMBERS AND LOCALITIES FOR ALLUAUDITE, HAGENDORFITE, AND VARULITE ...
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View PDF for article title, Alluaudite-Group Phosphate and Arsenate Minerals
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Normalized ternary plot of (Mn + Ca) versus vacancy versus Na (apfu) for alluaudite, hagendorfite, and varulite.

Normalized ternary plot of (Mn + Ca) versus vacancy versus Na ( apfu ) ... Available to Purchase

Published: 26 May 2021
Fig. 1. Normalized ternary plot of (Mn + Ca) versus vacancy versus Na ( apfu ) for alluaudite, hagendorfite, and varulite.
Journal Article

Phosphate nodules containing two distinct assemblages in the Cema granitic pegmatite, San Luis province, Argentina: Paragenesis, composition and significance Available to Purchase

Encarnación Roda-Robles, Miguel A. Galliski, M. Belén Roquet, Frédéric Hatert, Philippe de Paeseval
Published: 01 August 2012
The Canadian Mineralogist (2012) 50 (4): 913–931.
DOI: https://doi.org/10.3749/canmin.50.4.913
... of varulite. c) Olive-green qingheiite containing rounded crystals of sicklerite, generally surrounded by a rim of deep yellow varulite. d) Extensive replacement of sicklerite (orange relics) by deep yellow varulite, and with staněkite occurring interstitially. e) Same as b) along with an idiomorphic crystal...
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View PDF for article title, Phosphate nodules containing two distinct assemblages in the Cema granitic pegmatite, San Luis province, Argentina: Paragenesis, composition and significance
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Cationic distribution on the M(2) site of alluaudite-type phosphates. Black circles = type alluaudites (Damour, 1847, 1848), stars = type hagendorfites (Strunz, 1954), triangles = type varulites (Quensel, 1937, 1940).

Cationic distribution on the M (2) site of alluaudite-type phosphates. Bla... Open Access

Published: 01 July 2019
Fig. 2 Cationic distribution on the M (2) site of alluaudite-type phosphates. Black circles = type alluaudites ( Damour, 1847 , 1848 ), stars = type hagendorfites ( Strunz, 1954 ), triangles = type varulites ( Quensel, 1937 , 1940 ).
Journal Article

A new nomenclature scheme for the alluaudite supergroup Open Access

Frédéric Hatert
Published: 01 July 2019
European Journal of Mineralogy (2019) 31 (4): 807–822.
DOI: https://doi.org/10.1127/ejm/2019/0031-2874
...Fig. 2 Cationic distribution on the M (2) site of alluaudite-type phosphates. Black circles = type alluaudites ( Damour, 1847 , 1848 ), stars = type hagendorfites ( Strunz, 1954 ), triangles = type varulites ( Quensel, 1937 , 1940 ). ...
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Photograph of the large, fragmented ellipsoidal nodule, which consists of an outer and intermediate zone dominated by liraite (Lrt). The core is almost entirely replaced by alluaudite group minerals (Alldt; varulite and alluaudite). The light greenish-gray incrustations on the right side of the nodule are lichens.

Photograph of the large, fragmented ellipsoidal nodule, which consists of a... Available to Purchase

Published: 13 September 2021
Fig. 1. Photograph of the large, fragmented ellipsoidal nodule, which consists of an outer and intermediate zone dominated by liraite (Lrt). The core is almost entirely replaced by alluaudite group minerals (Alldt; varulite and alluaudite). The light greenish-gray incrustations on the right side
Journal Article

Liraite, ideally NaCa 2 Mn 2 [Fe 3+ Fe 2+ ]Mn 2 (PO 4 ) 6 (H 2 O) 2 , a new phosphate mineral of the wicksite group from the Ceferino Namuncurá pegmatite, Córdoba, Argentina Available to Purchase

Marco E. Biglia, Mark A. Cooper, Edward S. Grew, Martin G. Yates, Jorge A. Sfragulla, Alina B. Guereschi, María F. Márquez-Zavalía, Miguel A. Galliski
Published: 13 September 2021
The Canadian Mineralogist (2021) 59 (4): 751–761.
DOI: https://doi.org/10.3749/canmin.2000110
...Fig. 1. Photograph of the large, fragmented ellipsoidal nodule, which consists of an outer and intermediate zone dominated by liraite (Lrt). The core is almost entirely replaced by alluaudite group minerals (Alldt; varulite and alluaudite). The light greenish-gray incrustations on the right side...
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View PDF for article title, Liraite, ideally NaCa 2 Mn 2 [Fe 3+ Fe 2+ ]Mn 2 (PO 4 ) 6 (H 2 O) 2 , a new phosphate mineral of the wicksite group from the Ceferino Namuncurá pegmatite, Córdoba, Argentina
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(a) Photomicrograph of a polished thin section observed under a polarizing microscope. Green to yellowish brown subhedral crystals are liraite (Lrt) associated with a void filled with robertsite (Rbst) and partially replaced by alluaudite group minerals (Alldt; varulite and alluaudite). Late micro-veinlets of quartz (Qtz) crosscut the whole mineral assemblage. (b) Image of an irregular fragment of liraite, obtained with a binocular digital microscope.

(a) Photomicrograph of a polished thin section observed under a polarizing ... Available to Purchase

Published: 13 September 2021
Fig. 2. (a) Photomicrograph of a polished thin section observed under a polarizing microscope. Green to yellowish brown subhedral crystals are liraite (Lrt) associated with a void filled with robertsite (Rbst) and partially replaced by alluaudite group minerals (Alldt; varulite and alluaudite
Journal Article

Jahnsite-(CaMnMn), a new member of the whiteite group from Mangualde, Beira, Portugal Available to Purchase

Joel D. Grice, Pete J. Dunn, Robert A. Ramik
Published: 01 April 1990
American Mineralogist (1990) 75 (3-4): 401–404.
...Joel D. Grice; Pete J. Dunn; Robert A. Ramik Abstract Jahnsite-(CaMnMn), a new mineral species from Mangualde, Beira, Portugal, occurs as equant, brownish yellow crystals to 0.5 mm, associated with phosphosiderite, zodacite, varulite, and microcline. The mineral is transparent and has a vitreous...
View PDF for article title, Jahnsite-(CaMnMn), a new member of the whiteite group from Mangualde, Beira, Portugal
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Journal Article

Crystal Chemistry of the Alluaudite Structure Type: Contribution to the Paragenesis of Pegmatite Phosphate Giant Crystals Available to Purchase

Paul B. Moore
Published: 01 December 1971
American Mineralogist (1971) 56 (11-12): 1955–1975.
...Paul B. Moore Abstract Three-dimensional crystal structure analysis of an alluaudite from the Buranga pegmatite, Central Africa, elucidated the crystal chemistry of the alluaudites (hagendorfite, hiihnerkobelite, varulite, mangan-alluaudite, alluaudite, and the arsenate mineral caryi-nite). R ( hkt...
View PDF for article title, Crystal Chemistry of the Alluaudite Structure Type: Contribution to the Paragenesis of Pegmatite Phosphate Giant Crystals
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Journal Article

Palermo “hühnerkobelite” is alluaudite Available to Purchase

D. Jerome Fisher
Published: 01 June 1966
American Mineralogist (1966) 51 (5-6): 935–939.
... that it was different from type arrojadite and similar to the material from Norrö, Sweden and to some varulites. Lindberg's work was valuable in helping to clear up some confusion, but a new mineral name should not have been suggested on the basis of such scanty data. Nevertheless, the name was enshrined in Danas...
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Mössbauer spectra and Fe coordination polyhedra created using CrystalMaker software and data from the American Mineralogist Crystal Structure Database, with citations to the crystal structure refinements from which the polyhedra were built following each mineral species name. Dashed lines representing Fe2+ in doublets with Δ = 1.43–1.99 mm/s are shown in green, Δ = 2.00–2.85 mm/s are light blue, Δ &gt; 2.85 mm/s are dark blue. Solid lines represent Fe3+ with Δ = 0.23–0.49 mm/s in red, 0.5–0.79 mm/s in orange, and Δ &gt; 0.80–1.55 mm/s are purple. The fit envelope for each fit is shown as a thin solid line in gold. Alluaudite (Moore 1971a) ML-P40 and “ferroalluaudite” ML-P14 (Corbin et al. 1986) are predominantly Fe3+ in the M2 site. Two samples of hagendorfite, DD184 and DD237 (Redhammer et al. 2005), and varulite DD321 contain multiple doublets of Fe2+ and Fe3+, but as with the other alluaudite group minerals, all Fe is assigned to the M2 site. There is no crystal structure refinement available for varulite, so the M2 polyhedron from Hagendorfite is illustrated there hypothetically. Arrojadite ML-P25 (Yakubovich et al. 1986) contains multiple Fe2+ doublets but their assignments to specific sites are unclear. Childrenite (Giuseppetti and Tadini 1984) ML-P29 has only one doublet corresponding to the Fe (M) site. In arsenocrandallite DD150 (Blount 1974), Fe3+ is substituting into the Al site, likely in polyhedra with two different combinations of next nearest neighbors. (Color online.)

Mössbauer spectra and Fe coordination polyhedra created using CrystalMaker ... Available to Purchase

Published: 01 May 2014
is shown as a thin solid line in gold. Alluaudite ( Moore 1971a ) ML-P40 and “ferroalluaudite” ML-P14 ( Corbin et al. 1986 ) are predominantly Fe 3+ in the M2 site. Two samples of hagendorfite, DD184 and DD237 ( Redhammer et al. 2005 ), and varulite DD321 contain multiple doublets of Fe 2+ and Fe 3
Journal Article

PETROGRAPHIC EVIDENCE FOR PRIMARY HAGENDORFITE IN AN UNUSUAL ASSEMBLAGE OF PHOSPHATE MINERALS, KIBINGO GRANITIC PEGMATITE, RWANDA Available to Purchase

André-Mathieu Fransolet, Frédéric Hatert, François Fontan
Published: 01 June 2004
The Canadian Mineralogist (2004) 42 (3): 697–704.
DOI: https://doi.org/10.2113/gscanmin.42.3.697
... , D.J. ( 1955 ): Alluaudite . Am. Mineral . 40 , 1100 – 1109 . Fisher , D.J. ( 1957 ): Alluaudites and varulites . Am. Mineral . 42 , 661 – 664 . Fisher , D.J. ( 1958 ): Pegmatite phosphates and their problems . Am. Mineral . 43 , 181 – 207 . Fontan , F...
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View PDF for article title, PETROGRAPHIC EVIDENCE FOR PRIMARY HAGENDORFITE IN AN UNUSUAL ASSEMBLAGE OF PHOSPHATE MINERALS, KIBINGO GRANITIC PEGMATITE, RWANDA
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Mössbauer parameters of iron in phosphate minerals: Implications for interpretation of martian data Available to Purchase

M. Darby Dyar, Erica R. Jawin, Elly Breves, Gerard Marchand, Melissa Nelms, Melissa D. Lane, Stanley A. Mertzman, David L. Bish, Janice L. Bishop
Published: 01 May 2014
American Mineralogist (2014) 99 (5-6): 914–942.
DOI: https://doi.org/10.2138/am.2014.4701
... is shown as a thin solid line in gold. Alluaudite ( Moore 1971a ) ML-P40 and “ferroalluaudite” ML-P14 ( Corbin et al. 1986 ) are predominantly Fe 3+ in the M2 site. Two samples of hagendorfite, DD184 and DD237 ( Redhammer et al. 2005 ), and varulite DD321 contain multiple doublets of Fe 2+ and Fe 3...
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View PDF for article title, Mössbauer parameters of iron in phosphate minerals: Implications for interpretation of martian data
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Electronic absorption spectra of phosphate minerals with olivine-type Structures: II. The oxidized minerals ferrisicklerite, M1[6] (□ 1− x Li x ) M2[6] (Fe 3+ 1− x Mn 2+ x [PO 4 ], and heterosite, M1[6] (□1.00) M2[6] (Fe 3+ 1−x Mn 3+ x [PO 4 ], with x ≤ 0.5 Available to Purchase

Klaus Langer, Michail N. Taran, André-Mathieu Fransolet
Published: 01 July 2007
European Journal of Mineralogy (2007) 19 (4): 589–592.
DOI: https://doi.org/10.1127/0935-1221/2007/0019-1742
... of ferrisicklerite, Li <1 (Fe 3 + , Mn 2+ )PO 4 . Acta Cryst ., B32 , 2761 – 2764 . Björling , C.O. , Westgren , A. ( 1938 ): Minerals of the Varuträsk pegmatite. IX. X-ray studies on triphylite, varulite, and their oxidation products . Geol. Fören. Förhandl ., 60 , 67 – 72...
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View PDF for article title, Electronic absorption spectra of phosphate minerals with olivine-type Structures: II. The oxidized minerals ferrisicklerite, M1[6] (□ 1− x Li x ) M2[6] (Fe 3+ 1− x Mn 2+ x [PO 4 ], and heterosite, M1[6] (□1.00) M2[6] (Fe 3+ 1−x Mn 3+ x [PO 4 ], with x ≤ 0.5
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Add to Citation Manager for Electronic absorption spectra of phosphate minerals with olivine-type Structures: II. The oxidized minerals ferrisicklerite, M1[6] (□ 1− x Li x ) M2[6] (Fe 3+ 1− x Mn 2+ x [PO 4 ], and heterosite, M1[6] (□1.00) M2[6] (Fe 3+ 1−x Mn 3+ x [PO 4 ], with x ≤ 0.5