Skip to main content Accessibility help

Flurlite, Zn3Mn2+Fe3+(PO4)3(OH)2·9H2O, a new mineral from the Hagendorf Süd pegmatite, Bavaria, with a schoonerite-related structure

  • I. E. Grey (a1), E. Keck (a2), W. G. Mumme (a1), A. Pring (a3), C. M. Macrae (a1), R. W. Gable (a4) and J. R. Price (a5)...


Flurlite, ideally Zn3Mn2+Fe3+(PO4)3(OH)2·9H2O, is a new mineral from the Hagendorf-Süd pegmatite, Hagendorf, Oberpfalz, Bavaria, Germany. Flurlite occurs as ultrathin (<1 μm) translucent platelets that form characteristic twisted accordion-like aggregates. The colour varies from bright orange red to dark maroon red. Cleavage is perfect parallel to (001). The mineral occurs on mitridatite and is closely associated with plimerite. Other associated minerals are beraunite, schoonerite, parascholzite, robertsite and altered phosphophyllite. The calculated density of flurlite is 2.84 g cm–3. It is optically biaxial (–), α = 1.60(1), β= 1.65(1) and γ = 1.68(1), with weak dispersion and parallel extinction, Xc, Ya, Zb. Pleochroism is weak, with colours: X = pale yellow, Y = pale orange, Z = orange brown. Electron microprobe analyses (average of seven) with FeO and Fe2O3 apportioned and H2O calculated on structural grounds, gave ZnO 25.4, MnO 5.28, MgO 0.52, FeO 7.40, Fe2O3 10.3, P2O5 27.2, H2O 23.1, total 99.2 wt.%. The empirical formula, based on 3 P a.p.f.u. is Zn2.5Mn2+ 0.6Fe2+ 0.8Mg0.1Fe3+(PO4)3(OH)2·9H2O. Flurlite is monoclinic, P21/m, with the unit-cell parameters (at 100 K) of a = 6.3710(13), b = 11.020(2), c = 13.016(3) Å, β = 99.34 (3)°. The strongest lines in the X-ray powder diffraction pattern are [d obs in Å(I) (hkl)] 12.900(100)(001); 8.375(10)(011); 6.072(14)(101); 5.567(8)(012); 4.297(21)(003); 2.763(35)(040). Flurlite (R 1 = 0.057 for 995 F > 4σ(F)) has a heteropolyhedral layer structure, with layers parallel to (001) and with water molecules packing between the layers. The slab-like layers contain two types of polyhedral chains running parallel to [100]: (a) chains of edge-sharing octahedra containing predominantly Zn and (b) chains in which Fe3+-centred octahedra share their apices with dimers comprising Zn-centred trigonal bipyramids sharing an edge with PO4 tetrahedra. The two types of chains are interconnected by corner-sharing along [010]. A second type of PO4 tetrahedron connects the chains to MnO2(H2O)4 octahedra along [010] to complete the structure of the (001) slabs. Flurlite has the same stoichiometry as schoonerite, but with dominant Zn rather than Fe2+ in the edge-shared chains. Schoonerite has a similar heteropolyhedral layer structure with the same layer dimensions 6.4 × 11.1 Å. The different symmetry (orthorhombic, Pmab) for schoonerite reflects a different topology of the layers.


Corresponding author


Hide All
Bernard, J.H. and Hyrsl, J. (2004) Minerals and their localities (YT. King, editor). Granit, Prague, Czech Republic.
Birch, W.D., Grey, I.E., Mills, S.J., Pring, A. Wilson, N.C. and Keck, E. (2011) Nordgauite, MnAl2(PO4)2(F,OH)2 • 5H2O, a new mineral from the Hagendorf Siid pegmatite, Bavaria, Germany: description and crystal structure. Mineralogical Magazine, 75, 269278.
Farrugia, L.J. (2012) WinGX and ORTEP for Windows: an update. Journal of Applied Crystallography, 45, 849854.
Frondel, C. (1958) Strunzite, a new mineral. Naturwissenschaften, 45, 37.
Kampf, A.R. (1977) Schoonerite: its atomic arrangement. American Mineralogist, 62, 250255.
Kampf, A.R., Mills, S.J., Simmons, W.B., Nizamoff, J.W. and Whitmore, R.W. (2012) Falsterite, Ca2MgMnl+(FeoH 5Feo-5)4Zn4(P04)8(OH)4(H20)i4, a new secondary phosphate mineral from the Palermo No. 1 pegmatite, North Groton, New Hampshire. American Mineralogist, 97, 496502.
Kastning, J. and Schliiter, J. (1994) Die Mineralien von Hagendorf und ihre Bestimmung. Schriften des Mineralogischen Museums der Universitat Hamburf Band 2, C. Weise Verlag, Munich, 95 pp.
Laubmann, H. and Steinmetz, H. (1920) Phosphat-fuhrende pegmatite des Oberfalzer und Bayerischen Waldes. Zeitschrifi fur Krystallografie und Mineralogie, 55, 523586.
Laugier, I andBochu, B. (2000) LMGF'-Program for the interpretation of X-ray experiments. INPG/Laboratoire des Materiaux et du Genie Physique, St Martin d'Heres, France.
Mandarino, J.A. (1981) The Gladstone-Dale relationship: Part IY The compatibility concept and its application. The Canadian Mineralogist, 19, 441450.
Moore, P.B. and Kampf, A.R. (1977) Schoonerite, a new zinc-manganese-iron phosphate mineral. American Mineralogist, 62, 246249.
Miicke, A. (1981) The paragenesis of the phosphate minerals of the Hagendorf pegmatite—a general view. Chemie der Erde, 40, 217234.
Mullbauer, F. (1925) Die Phosphatpegmatite von Hagendorf i. Bayern (neue Beobachtungen). Zeitschrift fur Krystallographie, 61, 331336.
Petficek, Y andDusek, M. (2006) JANA2006. Structure Determinations Software Programs. Institute of Physics, Academy of Sciences of the Czech Republic, Prague.
Sheldrick, G.M. (2015) Crystal structure refinement wit. SHELXL. Ada Crystallographica, C71, 38.
Strunz, H. (1950) Scholzit, eine neue Mineralart. Fortschritte der Mineralogie, 27, 31.
Strunz, H. (1954a) Hagendorfit, ein neues Mineral der Varulith-Huhnerkobelit-Reihe. Neues Jahrbuch fur Mineralogie Monatshafte, 252—255.
Strunz, H. (19546) Laueit, MnFe2III(PO4)2(OH)2-8H2O, ein neues Mineral. Naturwissenschaften, 41, 256.
Strunz, H. (1956) Pseudolaueit, ein neues Mineral. Naturwissenschaften, 43, 128.
Yakovenchuk, YN., Keck, E., Krivovichev, S.Y, Pakhomovsky, YA., Selivanova, E.A., Mikhailova, I A., Chernyatieva, A.R and Ivanyuk, G.Yu. (2012) Whiteite-(CaMnMn),CaMnMn2Al2[PO4]4(OH)2-8H2O, a new mineral from the Hagendorf-Siid granitic pegmatite, Germany. Mineralogical Magazine, 76, 27612771.


Related content

Powered by UNSILO
Type Description Title
Supplementary materials

Grey et al. supplementary material

 Unknown (498 KB)
498 KB

Flurlite, Zn3Mn2+Fe3+(PO4)3(OH)2·9H2O, a new mineral from the Hagendorf Süd pegmatite, Bavaria, with a schoonerite-related structure

  • I. E. Grey (a1), E. Keck (a2), W. G. Mumme (a1), A. Pring (a3), C. M. Macrae (a1), R. W. Gable (a4) and J. R. Price (a5)...


Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed.