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Elfstorpite synonymy with allactite; mineral and name discredited

  • F. Fontan (a1), D. Holtstam (a2), P. de Parseval (a1), F. Permingeat (a1) and B. Mason (a3)...

Abstract

Holotype material and other specimens of ‘elfstorpite’ from the Sjögruvan deposit, Örebro, Sweden have been characterized by powder X-ray diffraction and chemical analysis. The mineral is indistinguishable from allactite, which has priority, and consequently ‘elfstorpite’ should be discredited. The IMA Commission on New Minerals and Mineral Names has approved the proposition.

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Embrey, P.J. and Fuller, J.P. (1980) A Manual of New Mineral Names 1892–1978. British Museum (Natural History), Oxford University Press, Oxford UK, 99 pp.
Fontan, F., Orliac, M. and Permingeat, F. (1975) La krautite MnHAsO4·H2O, une nouvelle espèce minérale. Bulletin de la Société française de Minéralogie et Cristallographie, 98, 78–84.
Hey, M.H. (1962) Chemical Index of Minerals. British Museum (Natural History), London, 255 pp.
Igelström, L.J. (1893) Mineralogiska meddelanden. 20. Nya mineral från Sjögrufvan (lamprostibian, chloroarsenian, elfstorpit). Geologiska Föreningens i Stockholm Förhandlingar, 15, 471–472.
Igelström, L.J. (1894) XXVIII. Neue Mineralien aus der Sjögrube, Gouv. Örebro, Schweden. Zeischrift für Krystallographie, XXIII, 468.
Moore, P.B. (1968) Crystal chemistry of the basic manganese arsenate minerals: II. The crystal structure of allactite. American Mineralogist, 53, 733–741.
Moore, P.B. (1972) Contributions to the mineralogy of Sweden. III. On Igelström's manganese arsenates and antimonates from the Sjö Mine, Grythyttan, Örebro County, Sweden. Geologiska Föreningens i Stockholm Förhandlingar, 94, 423–434.
Palache, Ch., Berman, H. and Frondel, C. (1951) Dana's System of Mineralogy, 7th edition, vol. II, J. Wiley and Sons, 920 pp.
Sjögren, A. (1884) Allaktit, ett nytt manganarseniat från Mossgrufvan å Nordmarksfältet. Geologiska Föreningens i Stockholm Förhandlingar, 7, 109–111.
Strunz, H. and Tennyson, Ch. (1970) Mineralogische Tabellen. Akademische Verlagsgesellschaft, Leipzig, Germany.

Keywords

Elfstorpite synonymy with allactite; mineral and name discredited

  • F. Fontan (a1), D. Holtstam (a2), P. de Parseval (a1), F. Permingeat (a1) and B. Mason (a3)...

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