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1-20 OF 33 RESULTS FOR
varulite
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Journal Article
Alluaudites and Varulites Available to Purchase
Journal: American Mineralogist
Publisher: Mineralogical Society of America
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...
Image
Photomicrographs of the main textures observed in the BWS association from ... Available to Purchase
in Phosphate nodules containing two distinct assemblages in the Cema granitic pegmatite, San Luis province, Argentina: Paragenesis, composition and significance
> The Canadian Mineralogist
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
Image
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
Image
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.
Image
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
Journal: The Canadian Mineralogist
Publisher: Mineralogical Association of Canada
Published: 26 May 2021
The Canadian Mineralogist (2021) 59 (1): 243–263.
...TABLE 4. SAMPLE NUMBERS AND LOCALITIES FOR ALLUAUDITE, HAGENDORFITE, AND VARULITE ...
Image
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
Journal: The Canadian Mineralogist
Publisher: Mineralogical Association of Canada
Published: 01 August 2012
The Canadian Mineralogist (2012) 50 (4): 913–931.
... 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...
Image
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
Journal: European Journal of Mineralogy
Publisher: GeoScienceWorld Journals
Published: 01 July 2019
European Journal of Mineralogy (2019) 31 (4): 807–822.
...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 ). ...
Image
Photograph of the large, fragmented ellipsoidal nodule, which consists of a... Available to Purchase
in 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
> The Canadian Mineralogist
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
Journal: The Canadian Mineralogist
Publisher: Mineralogical Association of Canada
Published: 13 September 2021
The Canadian Mineralogist (2021) 59 (4): 751–761.
...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...
Image
(a) Photomicrograph of a polished thin section observed under a polarizing ... Available to Purchase
in 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
> The Canadian Mineralogist
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
Journal: American Mineralogist
Publisher: Mineralogical Society of America
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...
Journal Article
Crystal Chemistry of the Alluaudite Structure Type: Contribution to the Paragenesis of Pegmatite Phosphate Giant Crystals Available to Purchase
Journal: American Mineralogist
Publisher: Mineralogical Society of America
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...
Journal Article
Palermo “hühnerkobelite” is alluaudite Available to Purchase
Journal: American Mineralogist
Publisher: Mineralogical Society of America
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...
Image
Mössbauer spectra and Fe coordination polyhedra created using CrystalMaker ... Available to Purchase
in Mössbauer parameters of iron in phosphate minerals: Implications for interpretation of martian data
> American Mineralogist
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
Journal: The Canadian Mineralogist
Publisher: Mineralogical Association of Canada
Published: 01 June 2004
The Canadian Mineralogist (2004) 42 (3): 697–704.
... , 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...
Journal Article
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
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 May 2014
American Mineralogist (2014) 99 (5-6): 914–942.
... 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
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
Journal: European Journal of Mineralogy
Publisher: GeoScienceWorld Journals
Published: 01 July 2007
European Journal of Mineralogy (2007) 19 (4): 589–592.
... 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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