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Classification of the minerals of the graftonite group

Published online by Cambridge University Press:  16 May 2018

Frank C. Hawthorne*
Department of Geological Sciences, University of Manitoba, Winnipeg, Manitoba, Canada R3T 2N2
Adam Pieczka
AGH University of Science and Technology, Department of Mineralogy, Petrography and Geochemistry, 30-059 Kraków, Mickiewicza 30, Poland


A classification and nomenclature scheme has been approved by the International Mineralogical Association Commission on New Minerals, Nomenclature and Classification for the minerals of the graftonite group. The crystal structures of these minerals have three distinct sites that are occupied by Fe2+, Mn2+ and Ca2+. These sites have coordination numbers [8], [5] and [6], and these differences lead to very strong order of Fe2+, Mn2+ and Ca2+ over these sites. As a result of this strong order, the following compositions have been identified as distinct species: graftonite: FeFe2(PO4)2; graftonite-(Ca): CaFe2(PO4)2; graftonite-(Mn): MnFe2(PO4)2; beusite: MnMn2(PO4)2; and beusite-(Ca): CaMn2(PO4)2.

Copyright © Mineralogical Society of Great Britain and Ireland 2019 

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Associate Editor: Stuart Mills


Beus, A.A. (1950) Magniophilite and mangankoninckite, two new minerals from pegmatites. Doklady Akademii Nauk SSSR, 73, 12671279.Google Scholar
Bild, R.W. (1974) New occurrences of phosphates in iron meteorites. Contributions to Mineralogy and Petrology, 45, 9198.CrossRefGoogle Scholar
Brooks, J.H. and Shipway, C.H. (1960) Mica Creek pegmatites, Mount Isa, North-western Queensland. Queensland Government Mining Journal, 61(708), 511522.Google Scholar
Calvo, C. (1968) The crystal structure of graftonite. American Mineralogist, 53, 742750.Google Scholar
Černy, P., Selway, J.B., Ercit, T.S., Breaks, F.W., Anderson, A.J. and Anderson, S.D. (1998) Graftonite-beusite in granitic pegmatites of the Superior Province: A study in contrasts. The Canadian Mineralogist, 36, 367376.Google Scholar
Ercit, T.S., Tait, K., Cooper, M.A., Abdu, Y., Ball, N.A., Anderson, A.J., Černý, P., Hawthorne, F.C. and Galliski, M. (2010) Manitobaite, Na16${\rm Mn}_{{\rm 25}}^{2 +} $Al8(PO4)30, a new phosphate mineral from Cross Lake, Manitoba, Canada. The Canadian Mineralogist, 48, 14551463.CrossRefGoogle Scholar
Fransolet, A.-M. (1977) Intercroissances et inclusions dans les associations graftonite-sarcopside-triphylite. Bulletin de la Société française de minéralogie et de cristallographie, 100, 198207.Google Scholar
Fransolet, A.-M., Keller, P. and Fontan, F. (1986) The phosphate mineral associations of the Tsaobismund pegmatite, Namibia. Contributions to Mineralogy and Petrology, 92, 502517.CrossRefGoogle Scholar
Galliski, M.A., Oyarzábal, J.C., Márquez-Zavalía, M.F. and Chapman, R. (2009) The association qingheiite–beusite–lithiophilite in the Santa Ana pegmatite, San Luis, Argentina. The Canadian Mineralogist, 47, 12131223.CrossRefGoogle Scholar
Guastoni, A., Nestola, F., Mazzoleni, G. and Vignola, P. (2007) Mn-rich graftonite, ferrisicklerite, staněkite and Mn-rich vivianite in a granitic pegmatite at Soè Valley, central Alps, Italy. Mineralogical Magazine, 71, 579585.CrossRefGoogle Scholar
Hålenius, U.F., Hatert, F.M., Pasero, M. and Mills, S.J. (2017) CNMNC Newsletter No. 36, April 2017, Mineralogical Magazine, 81, 403409.CrossRefGoogle Scholar
Hatert, F., Mills, S.J., Pasero, M. and Williams, P.A. (2013) CNMNC guidelines for the use of suffixes and prefixes in mineral nomenclature, and for the preservation of historical names. European Journal of Mineralogy, 25, 113115.CrossRefGoogle Scholar
Hawthorne, F.C. (1998) Structure and chemistry of phosphate minerals. Mineralogical Magazine, 62, 141164.CrossRefGoogle Scholar
Hawthorne, F.C., Wise, M.A., Černý, P., Abdu, Y.A., Ball, N., Pieczka, A. and Włodek, A. (2018) Beusite-(Ca), ideally CaMn2+2(PO4)2, a new graftonite-group mineral from the Yellowknife pegmatite field, Northwest Territories, Canada: description and crystal structure. Mineralogical Magazine, 82, 13231332.CrossRefGoogle Scholar
Huminicki, D.M.C. and Hawthorne, F.C. (2002) The crystal chemistry of the phosphate minerals. Pp. 123253 in: Phosphates (Kohn, M., Rakovan, J. and Hughes, J.M., editors). Reviews in Mineralogy and Geochemistry, 48. The Mineralogical Society of America and the Geochemical Society, Washington DC.CrossRefGoogle Scholar
Hurlbut, C.S. Jr. and Aristarain, L.F. (1968) Beusite, a new mineral from Argentina, and the graftonite–beusite series. American Mineralogist, 53, 17991814.Google Scholar
Lahti, S.I. (1981) On the granitic pegmatites of the Eräjärvi area in Orivesi, southern Finland. Geological Survey of Finland, Bulletin, 314. Geologinen Tutkimuslaitos Espoo 1981.Google Scholar
Mills, S.J., Hatert, F., Nickel, E.H. and Ferraris, G. (2009) The standardisation of mineral group hierarchies: application to recent nomenclature proposals. European Journal of Mineralogy, 21, 10731080.CrossRefGoogle Scholar
Nord, A.G. (1982) Graftonite-type and graftonite-related (Mn1–zMez)3(PO4)2 solid solutions. Materials Research Bulletin, 17, 10011010.CrossRefGoogle Scholar
Nord, A.G. and Ericsson, T. (1982 a) The cation distribution in (Fe,Mn)3(PO4)2 graftonite-type solid solutions. American Mineralogist, 67, 826832.Google Scholar
Nord, A.G. and Ericsson, T. (1982 b) Cation distributions in synthetic (Fe1–zMez)3(PO4)2 graftonite-type solid solutions determined by Mössbauer spectroscopy. Zeitschrift für Kristallographie, 161, 209224.CrossRefGoogle Scholar
Olsen, E.J. and Fredriksson, K. (1966) Phosphates in iron and palbite meteorites. Geochimica Cosmochimica Acta, 30, 459470.CrossRefGoogle Scholar
Olsen, E.J., Kracher, A., Davis, A.M., Steele, I.M., Hutcheon, I.D. and Bunch, T.E. (1999) The phosphates of IIIAB iron meteorites. Meteorics and Planetary Science, 34, 285300.CrossRefGoogle Scholar
Penfield, S.L. (1900) On graftonite, a new mineral from Grafton, New Hampshire and its intergrowth with triphylite. American Journal of Science, 159, 2032.CrossRefGoogle Scholar
Pieczka, A. (2007) Beusite and an unusual Mn-rich apatite from the Szklary granitic pegmatite, Lower Silesia, southwestern Poland. The Canadian Mineralogist, 45, 901914.CrossRefGoogle Scholar
Smeds, S.A., Uher, P., Černý, P., Wise, M.A., Gustafsson, L. and Penner, P. (1998) Graftonite – beusite in Sweden: primary phases, products of exsolution, and distribution in zoned populations of granitic pegmatites. The Canadian Mineralogist, 36, 377394.Google Scholar
Stalder, M. and Rozendaal, A. (2002) Graftonite in phosphatic iron formations associated with the mid-Proterozoic Gamsberg Zn-Pb deposit, Namaqua Province, South Africa. Mineralogical Magazine, 66, 915927.CrossRefGoogle Scholar
Staněk, J. (1991) The mineral parageneses of the Dolní Bory-hatě pegmatite dykes, western Moravia, Czechoslovakia. Acta Musei Moraviae, Scientiae Naturales, 76, 1949.Google Scholar
Steele, I.M., Olsen, E., Pluth, J. and Davis, A.M. (1991) Occurrence and crystal structure of Ca-free beusite in the El Sampal IIIA iron meteorite. American Mineralogist, 76, 19851989.Google Scholar
Tait, K.T., Hawthorne, F.C. and Wise, M.A. (2013) The crystal structure of the graftonite–beusite minerals. The Canadian Mineralogist, 51, 653662.CrossRefGoogle Scholar
Vignola, P., Diella, V., Oppizzi, P., Tiepolo, M. and Weiss, S. (2008) Phosphate assemblages from the Brissago granitic pegmatite, western southern Alps, Switzerland. The Canadian Mineralogist, 46, 635650.CrossRefGoogle Scholar
Wise, M.A. and Černý, P. (1990) Beusite-triphylite intergrowths from the Yellowknife pegmatite field, Northwest Territories. The Canadian Mineralogist, 28, 133139.Google Scholar
Wise, M.A., Hawthorne, F.C. and Černý, P. (1990) Crystal structure of Ca-rich beusite from the Yellowknife pegmatite field, Northwest Territories. The Canadian Mineralogist, 28, 141146.Google Scholar
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