...Table 7. Comparative characteristics of savelievaite, ludwigite and fredrikssonite. ...

...F ig . 5. Various [ M ϕ 4 ]-derivative structures projected down the chain axis: (a) descloizite, (b) gladiusite, (c) fredrikssonite, (d) orthopinakiolite, (e) takéuchiite, (f) blatterite, (g) pinakiolite. The ribbons and linking octahedra are shaded black for emphasis. ...

... to the description of the following new mineral species: kellyite ( Peacor et al . 1974 ), fredrikssonite ( Dunn et al . 1983 ), sinkankasite ( Peacor et al . 1984a ) paulkerrite ( Peacor et al . 1984b ), earlshannonite ( Peacor et al . 1984c ), willhendersonite ( Peacor et al . 1984d ), lennilenapeite ( Dunn...

... ): Jahn–Teller distorted Mn 3+ O 6 octahedra in fredrikssonite, the fourth polymorph of Mg 2 Mn 3+ (BO 3 )O 2 . Can. Mineral . 32 , 397 – 403 . Catti , M. , Ferraris , G. & Ivaldi , G. ( 1977 ): Hydrogen bonding in the crystalline state. Structure of talmessite, Ca 2 (Mg, Co...

..., chestermanite ( Erd & Foord, 1988 ) and the Mn-dominant species, fredrikssonite ( Dunn et al., 1983 ) occur naturally, the Al-rich end-member (“alumoludwigite” according to Pertsev & Aleksandrov, 1964 ) has not been reported as a mineral. A continuous isomorphous series between ludwigite and Mg 2 Al...

... short, two intermediate and two long bonds) and are occupied by ~33% other cations. This situation is analogous to that of the M (4) octahedron in fredrikssonite (Burns et al ., 1994 ) in which a similar [2 + 2 + 2] distortion occurs and the M (4) site is occupied primarily by Mn 3+ with ~22% other...

... not-pure [6] Mn 3+ distorted octahedra lie outside the relation of Burns et al. (1994) . For instance, among minerals containing Mn 3+ distorted octahedra, the hydrated phosphate ercitite (M1 site, Cooper et al. 2009 ) and the borates fredrikssonite (M4 site, Burns et al. 1994 ) and pinakiolite (M3...

... . Azerbaidzhanskii Khimicheskii Zhurnal 2 , 137 – 141 . Burns , P.C. , Cooper , M.A. & Hawthorne , F.C. ( 1994 ): Jahn–Teller distorted Mn 3+ O 6 octahedra in fredrikssonite, the fourth polymorph of Mg 2 Mn 3+ (BO 3 )O 2 . Can. Mineral . 33 , 397 – 403 . Burns , P.C. , Grice...

.... and Hawthorne F.C. ( 1994 ) Jahn-Teller-distorted Mn 3+ O 6 octahedra in fredrikssonite, the fourth polymorph of Mg 2 Mn 3+ (BO 3 )O 2 . The Canadian Mineralogist , 32 , 397 – 403 . Chio C.H...

... (OH) 8 , the V analogue of allactite from the metamorphosed Mn ores at Pipji, Turtmann Valley, Switzerland . American Mineralogist , (in press) . Burns P.C. Cooper M.A. Hawthorne F.C. ( 1994 ) Jahn-Teller distorted Mn 3+ O 6 octahedra in fredrikssonite, the fourth polymorph...

... . Burns P.C. , Cooper M. and Hawthorne F.C. ( 1994 ) Jahn-Teller distorted Mn 3+ O 6 octahedra in fredrikssonite, the forth polymorph of Mg 2 Mn 3+ (BO 3 ) 2 . The Canadian Mineralogist , 32 , 397 – 403 . Callegari A.M. , Boiocchi M. , Ciriotti M.E. and Balestra...

... ): Jahn–Teller-distorted Mn 3+ O 6 octahedra in fredrikssonite, the fourth polymorph of Mg 2 Mn 3+ (BO 3 )O 2 . Can. Mineral . 32 , 397 – 403 . Dunn , P.J. ( 1983 ): Lotharmeyerite, a new mineral from Mapimi, Durango, Mexico . Mineral. Rec . 14 , 35 – 36 . Effenberger , H...

...-Teller-distorted Mn 3+ O 6 octahedra in fredrikssonite, the fourth polymorph of Mg 2 Mn 3+ (BO 3 )O 2 . Canadian Mineralogist 32 , 397 – 403 . Chaalia, S., Ayed, B., & Haddad, A. (2012) K 2 Mn 3 (AsO 4 ) 3 : Synthesis, Crystalline Structure and Ionic Conductivity...

..., P.C., Cooper, M.A., and Hawthorne, F.C. ( 1994 ) Jahn-Teller-distorted Mn 3+ O 6 octahedra in fredrikssonite, the fourth polymorph of Mg 2 Mn 3+ (BO 3 ) O 2 . The Canadian Mineralogist , 32 , 397 –403. Chen, S., Zhao, B., Hayes, P.C., and Jak, E. ( 2001 ) Experimental study of phase equilibria...