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Laubmannite (of Moore)

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About Laubmannite (of Moore)Hide

Formula:
(Fe3+,Fe2+,M)8+x(OH,H2O)9(H2O)2(PO4)5, M = Fe3+, Cu2+ or other metal cation, x ~ 0.1.
Specific Gravity:
3.37 (Calculated)
Crystal System:
Orthorhombic
Name:
Presently unnamed mineral originally described by Moore (1970) and structurally characterised by Kolitsch (2004); paucity of material hinders submission to IMA. Not identical with the original laubmannite, the type specimen of which was later discredited as a mixture of dufrénite, kidwellite and beraunite.
A valid, but presently officially unnamed species which was originally described by Moore (1970) and later structurally characterised by Kolitsch (2004).
The original "laubmannite" was discredited as a mixture of dufrénite, kidwellite and beraunite.

Easily confused with other iron phosphates such rockbridgeite, dufrénite, beraunite, etc.


Physical Properties of Laubmannite (of Moore)Hide

Density:
3.37 g/cm3 (Calculated)

Chemical Properties of Laubmannite (of Moore)Hide

Formula:
(Fe3+,Fe2+,M)8+x(OH,H2O)9(H2O)2(PO4)5, M = Fe3+, Cu2+ or other metal cation, x ~ 0.1.

Crystallography of Laubmannite (of Moore)Hide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pbcm
Cell Parameters:
a = 5.172 Å, b = 13.999 Å, c = 31.083 Å
Ratio:
a:b:c = 0.369 : 1 : 2.22
Unit Cell V:
2250.5 ų
Z:
4

Common AssociatesHide

Associated Minerals Based on Photo Data:
Strengite4 photos of Laubmannite (of Moore) associated with Strengite on mindat.org.
Kidwellite2 photos of Laubmannite (of Moore) associated with Kidwellite on mindat.org.
Benauite1 photo of Laubmannite (of Moore) associated with Benauite on mindat.org.

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Laubmannite (of Moore)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Moore, P. B. (1970): Crystal chemistry of the basic iron phosphates. Am. Mineral. 55, 135-169.
Dunn, P.J. (1990) Andrewsite and laubmannite formally discredited. American Mineralogist, 75, 1197-1199.
Kolitsch, U. (2004): The crystal structures of kidwellite and 'laubmannite', two complex fibrous iron phosphates. Mineralogical Magazine, 68, 147-165.

Internet Links for Laubmannite (of Moore)Hide

Localities for Laubmannite (of Moore)Hide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Germany
 
  • Baden-Württemberg
    • Freiburg
      • Ortenaukreis
        • Wolfach
          • Oberwolfach
            • Rankach valley
Walenta, K. (1981) Seltene Eisenphosphate aus der Grube Clara. Mineralien-Magazin, 5, 422-424. (in German); Walenta, K. (1992): Die Mineralien des Schwarzwaldes. Chr. Weise Verlag, München, 336 pp. (in German); U. Kolitsch (2004): The crystal structures of kidwellite and 'laubmannite', two complex fibrous iron phosphates. Mineralogical Magazine 68, 147-165.
  • Bavaria
    • Upper Palatinate
      • Auerbach
Geipel, R. (1982) Sammeln in der Oberpfalz: Die Phosphatmineralien von Auerbach. Mineralien-Magazin, 6, 549-554. (in German); Stanjek, H. (1983): Auerbach/Oberpfalz. Phosphatmineralien aus der Grube Leonie. Lapis 8 (3), 9-18; 42. (in German)
  • Hesse
    • Lahn-Dill
      • Wetzlar
        • Waldgirmes
Dietrich, R. (1978a): Neues zur Phosphatparagenese der Grube Rotläufchen in Waldgirmes bei Wetzlar, Teil I. Aufschluss, 29, 107-124. (in German) Dietrich, R. (1978b): Neues zur Phosphatparagenese der Grube Rotläufchen in Waldgirmes bei Wetzlar, Teil II. Aufschluss, 29, 139-153. (in German) Dietrich, R. (1982): Die Mineralien der Phosphatparagenese der Grube Rotläufchen. Emser Hefte, 4 (3), 22-47. (in German); Dietrich, R. (1978b): Neues zur Phosphatparagenese der Grube Rotläufchen in Waldgirmes bei Wetzlar, Teil II. Aufschluss, 29, 139-153. (in German); Dietrich, R. (1982): Die Mineralien der Phosphatparagenese der Grube Rotläufchen. Emser Hefte, 4 (3), 22-47. (in German)
Sweden
 
  • Norrbotten County
    • Kiruna
      • Kiruna district
        • Svappavaara
Moore, P. B. (1970): Crystal chemistry of the basic iron phosphates. Am. Mineral. 55, 135-169; Bjällerud, C.G. (1989) Phosphate minerals from the Leveäniemi iron mine, Svappavaara, Sweden. Mineralogical Record, 20, 343-346.
USA
 
  • Alabama
    • Cherokee Co.
Barwood, H. (1974) Iron phosphate mineral locality at Indian Mountain, Alabama. Mineralogical Record, 5, 241-244; Museum Victoria Registration Number: M 33568; Barwood, H. & Hajek, B. (1978): Notes of Some New Occurences in Alabama. Mineralogical Record. 9: 388-391
  • Arkansas
    • Montgomery Co.
      • Norman
Henry Barwood (unpublished PXRD data)
    • Polk Co.
Moore, P. B. (1970): Crystal chemistry of the basic iron phosphates. Am. Mineral. 55, 135-169.
      • Shady
Henry Barwood (unpublished PXRD data)
 
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