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Name: Arrojadite-(KFe) RRUFF ID: R070319 Ideal Chemistry: (KNa)Fe2+(CaNa2)Fe2+13Al(PO4)11(PO3OH)(OH)2 Locality: Nickel Plate mine, Keystone District, Pennington County, South Dakota, USA Source: James Shigley [view label] Owner: RRUFF Description: Green massive Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
Mineral Group: [ arrojadite (6) ] |
CHEMISTRY | ||||||||||
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RAMAN SPECTRUM | ||||||||||||
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BROAD SCAN WITH SPECTRAL ARTIFACTS | ||||||||||||
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POWDER DIFFRACTION | |||||||
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RRUFF ID: | R070319.1 | ||||||
Sample Description: | Powder, cell parameters are from single crystal | ||||||
Cell Refinement Output: |
a: 24.709(2)Å b: 10.039(1)Å c: 16.519(2)Å alpha: 90° beta: 105.680(5)° gamma: 90° Volume: 3945(1)Å3 Crystal System: monoclinic |
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REFERENCES for Arrojadite-(KFe) | |
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American Mineralogist Crystal Structure Database Record: [view record] |
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Guimarães D (1925) Arrojadita, um novo mineral do grupo da wagnerita, Publicaçao da Inspectoria de Obras Contra as Seccas, Rio de Janeiro, 58, 119-122 [view file] |
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Foshag W F (1927) New mineral names, American Mineralogist, 12, 355-356 [view file] |
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Krutik V M, Pushcharovskii D Y, Podebimskaya E A, Belov N V (1979) Crystal structure of arrojadite (translated into English), Kristallografiya, 24, 743-750 [view file] |
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Merlino S, Mellini M, Zanazzi P F (1981) Structure of arrojadite, KNa4CaMn4Fe10Al(PO4)12(OH,F)2, Acta Crystallographica, B37, 1733-1736 |
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Yakubovich O V, Matviyenko Y N, Simonov M A, Mel'nikov O K (1986) The crystalline structure of synthetic Fe3+-arrojadites with the idealized formula K2Na5Fe2+14Fe3+(PO4)12(OH)2, Vestnik Moskovskogo Universiteta, Geologiya, 1986, 36-47 [view file] |
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Steele I M (2002) Arrojadite: variations in space group and composition based on four new refinements, 18th General Meeting of the International Mineralogical Association, Edinburgh, UK, 2002, MO2-117 [view file] |
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Chopin C, Oberti R, Camara F (2006) The arrojadite enigma: II. Compositional space, new members, and nomenclature of the group, American Mineralogist, 91, 1260-1270 [view file] |
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Birch W D (2018) Minerals in the arrojadite, alluaudite and jahnsite-whiteite groups from the Mount Wills pegmatite field, Victoria, Australia, European Journal of Mineralogy, 30, 635-645 |
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