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arrojadite

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Journal Article
Published: 01 August 2006
American Mineralogist (2006) 91 (8-9): 1249–1259.
...Fernando Cámara; Roberta Oberti; Christian Chopin; Olaf Medenbach Abstract A re-examination of the chemistry and structure of nearly all the known occurrences of arrojadite and related minerals (dickinsonite and sigismundite) allowed understanding of the main substitution vectors and cation...
FIGURES | View All (5)
Journal Article
Published: 11 November 2020
Mineralogical Magazine (2020) 84 (6): 932–940.
...Inna Lykova; Ralph Rowe; Glenn Poirier; Kate Helwig; Henrik Friis Abstract A new arrojadite-group mineral manganoarrojadite-(KNa), ideally KNa 5 MnFe 13 Al(PO 4 ) 11 (PO 3 OH)(OH) 2 , was found in a phosphate-bearing granite pegmatite at the Palermo No. 1 mine, New Hampshire, USA. It forms anhedral...
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Journal Article
Published: 01 July 2016
The Canadian Mineralogist (2016) 54 (4): 1021–1032.
...Pietro Vignola; Frédéric Hatert; Maxime Baijot; Fabrice Dal Bo; Sergio AndÒ; Danilo Bersani; Alessandro Pavese; Andrea Risplendente; Francesco Vanini Abstract Arrojadite-(BaNa), BaNa 3 (Na,Ca)Fe 2+ 13 Al(PO 4 ) 11 (PO 3 OH)(OH) 2 , is the Na-, Ba-rich member of the arrojadite group. This primary...
FIGURES
Journal Article
Published: 01 August 2006
American Mineralogist (2006) 91 (8-9): 1260–1270.
...Christian Chopin; Roberta Oberti; Fernando Cámara Abstract A systematic chemical and structural investigation of arrojadite-group minerals has provided new data allowing us to design a consistent nomenclature scheme, approved by the IMA CNMMN (vote 05-D). The cornerstones of this scheme are: (1...
FIGURES
Journal Article
Published: 01 July 2019
European Journal of Mineralogy (2019) 31 (4): 823–836.
... of the arrojadite group. Mg orders preferentially in the M 1, M 2b, M 3a,b, M 4a,b and M 7a,b sites whereas the non-dominant Fe 2+ and very minor Mn 2+ show site preference for M 2a, M 5a,b and M 6a,b. The A 1 site is mostly populated by Ba, the A 2 site is empty, and minor Fe 2+ occurs at the B1b site...
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Journal Article
Published: 01 November 2018
The Canadian Mineralogist (2018) 56 (6): 923–938.
...Heidi E. Tomes; Veronica E. Di Cecco; Kimberly T. Tait; Fernando Cámara Abstract Arrojadite-(BaNa), BaNa 3 (NaCa)Fe 2+ 13 Al(PO 4 ) 11 (PO 3 OH)(OH) 2 , has been identified from Big Fish River, Yukon Territory, Canada. Arrojadite-(BaNa) was first discovered in the mine dumps of the Luna albite...
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Journal Article
Published: 01 May 2018
European Journal of Mineralogy (2018) 30 (3): 635–645.
... Mount Wills Granite. The phosphates include members of the arrojadite, alluaudite and jahnsite–whiteite groups, most commonly forming fine-grained intergrowths that have replaced primary phases such as triplite, wolfeite and presumed triphylite. Electron microprobe analysis has enabled...
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Journal Article
Published: 28 February 2018
Mineralogical Magazine (2018) 82 (4): 863–876.
... according to the nomenclature scheme of arrojadite-group minerals, approved by the IMA CNMNC. In fluorarrojadite-(BaNa), Fe 2+ is a dominant cation at the M site (so the root-name is arrojadite) and two suffixes are added to the root-name according to the dominant cation of the dominant valence state...
FIGURES
Journal Article
Published: 01 October 2014
European Journal of Mineralogy (2014) 26 (5): 679–688.
...Giancarlo Della Ventura; Fabio Bellatreccia; Francesco Radica; Christian Chopin; Roberta Oberti Abstract In order to clarify details of volatiles incorporation in arrojadites, two samples previously characterized by X-ray diffraction and electron-microprobe (EMP) and LA-ICPMS analysis were...
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Journal Article
Published: 01 December 1998
American Mineralogist (1998) 83 (11-12_Part_1): 1316–1322.
...Isamu Shinno; Li Zhe Abstract The Mossbauer spectra of arrojadite, (K,Ba)(Na,Ca) 5 (Fe (super 2+) , Mn, Mg) 14 Al(PO 4 ) 12 (OH,F), at 298 and 95 K were investigated for the first time. The spectra at both temperatures were analyzed in terms of their Fe (super 2+) quadrupole splitting distributions...
Journal Article
Published: 01 August 1996
The Canadian Mineralogist (1996) 34 (4): 827–834.
Journal Article
Published: 01 October 1981
American Mineralogist (1981) 66 (9-10): 1034–1049.
...Paul B. Moore; Takaharu Araki; Stefano Merlino; Marcello Mellini; Pier Francesco Zanazzi Abstract The complex crystal structure of the arrojadite–dickinsonite, KNa 4 Ca ( Fe,Mn ) 14 2 + Al ( OH , F ) 2 ( PO 4 ) 12 , series was studied by single-crystal X-ray diffraction techniques. Three...
Journal Article
Published: 01 August 1954
American Mineralogist (1954) 39 (7-8): 676–680.
...D. Jerome Fisher Abstract While working on classifying my x -ray powder films of the pegmatite phosphate minerals, it was recently noted that arrojadite from the Black Hills and dickinsonite from Branchville, Conn., yielded substantially identical results. In her recent paper (3) Mrs. Lindberg...
Journal Article
Published: 01 February 1950
American Mineralogist (1950) 35 (1-2): 59–76.
...Marie Louise Lindberg Abstract Headden's unnamed sodium iron manganese phosphate from the Nickel Plate pegmatite, S. Dak., has been reexamined and its identity with arrojadite from the Serra Branca pegmatite, Brazil, has been established by direct comparison. The optical properties of arrojadite...
Journal Article
Published: 01 April 2011
The Canadian Mineralogist (2011) 49 (2): 521–540.
... 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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Journal Article
Published: 01 December 1975
American Mineralogist (1975) 60 (11-12): 957–964.
... quartz, siderite, scorzalite, goyazite, palermoite, bjarebyite, childrenite, arrojadite, and many very late products. Foggite , Ca(H 2 O)Al(OH) 2 [P0 4 ], a 9.270(2)Å, b 21.324(7)Å, c 5.190(2)Å, A 2 1 22, Z = 8, specific gravity 2.78, hardness 4, cleavages {010} perfect and {100} good, occurs...
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Assignment of cation sites for minerals of the <b>arrojadite</b> group (compiled a...
Published: 11 November 2020
Table 6. Assignment of cation sites for minerals of the arrojadite group (compiled after Chopin et al. , 2006 , with additions)*. Sites** A 1 A 2 B 1 B 1b,c B 2 C Na1 Na2 Na3 Al M P W Ref Arrojadite-(KNa) K Na Na Na Ca Na Na □ Al
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Comparative data for manganoarrojadite-(KNa) and selected <b>arrojadite</b>-group ...
Published: 11 November 2020
Table 7. Comparative data for manganoarrojadite-(KNa) and selected arrojadite-group minerals. Mineral Manganoarrojadite-(KNa) Arrojadite-(KNa) Arrojadite-(BaNa) Formula KNa 5 Mn 2+ Fe 13 Al(PO 4 ) 11 (PO 3 OH)(OH) 2 KNa 5 CaFe 13 Al(PO 4 ) 11 (PO 3 OH)(OH) 2 BaNa 3 (NaCa
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THE FORMULAE OF THE PHOSPHATE MINERALS ASSOCIATED WITH <b>ARROJADITE</b>-GROUP MIN...
Published: 01 November 2018
TABLE 1. THE FORMULAE OF THE PHOSPHATE MINERALS ASSOCIATED WITH ARROJADITE-GROUP MINERALS IN THE RAPID CREEK FORMATION, YUKON
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Crystal of <b>arrojadite</b>-(BaNa), specimen W1 (in circle). The clear, colorless...
Published: 01 November 2018
Fig. 2. Crystal of arrojadite-(BaNa), specimen W1 (in circle). The clear, colorless (W1 n.5) zones are visible along the edges, and the center of the crystal is medium grey (W1 n.1). White augelite crystals and green gormanite needles are associated with arrojadite-(BaNa) on the specimen.