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Pseudolaueite

A valid IMA mineral species - grandfathered
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00020790015743443147529.jpg
Pseudolaueite, etc.

Hagendorf South Pegmatite, Hagendorf, Waidhaus, Neustadt an der Waldnaab District, Upper Palatinate, Bavaria, Germany
05297240014977299762105.jpg
Pseudolaueite

Hagendorf South Pegmatite, Hagendorf, Waidhaus, Neustadt an der Waldnaab District, Upper Palatinate, Bavaria, Germany
01805450014946604992302.jpg
Pseudolaueite

Hagendorf South Pegmatite, Hagendorf, Waidhaus, Neustadt an der Waldnaab District, Upper Palatinate, Bavaria, Germany
04736100015454638663977.jpg
Pseudolaueite, etc.

Hagendorf South Pegmatite, Hagendorf, Waidhaus, Neustadt an der Waldnaab District, Upper Palatinate, Bavaria, Germany
09899400014947235814406.jpg
Pseudolaueite

Hagendorf South Pegmatite, Hagendorf, Waidhaus, Neustadt an der Waldnaab District, Upper Palatinate, Bavaria, Germany
01805450014946604992302.jpg
Pseudolaueite

Hagendorf South Pegmatite, Hagendorf, Waidhaus, Neustadt an der Waldnaab District, Upper Palatinate, Bavaria, Germany
04736100015454638663977.jpg
Pseudolaueite, etc.

Hagendorf South Pegmatite, Hagendorf, Waidhaus, Neustadt an der Waldnaab District, Upper Palatinate, Bavaria, Germany
05297240014977299762105.jpg
Pseudolaueite

Hagendorf South Pegmatite, Hagendorf, Waidhaus, Neustadt an der Waldnaab District, Upper Palatinate, Bavaria, Germany
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About PseudolaueiteHide

Formula:
Mn2+Fe3+2(PO4)2(OH)2 · 8H2O
Colour:
Orange-yellow to amber-yellow
Lustre:
Sub-Vitreous, Resinous
Hardness:
3
Specific Gravity:
2.463
Crystal System:
Monoclinic
Name:
Named in 1956 by Hugo Strunz for the chemical similarity to laueite. (Stewartite and strunzite have different amounts of structural water and are not strictly polymorphs of laueite.)
Polymorph of:
Laueite, Stewartite
Related to the Laueite Group.


Unique IdentifiersHide

Mindat ID:
3297
Long-form identifier:
mindat:1:1:3297:7
GUID
(UUID V4):
b151c9c3-c342-4be8-8478-9215287c1e7b

IMA Classification of PseudolaueiteHide

IMA status:
Approved, 'Grandfathered' (first described prior to 1959)

Classification of PseudolaueiteHide

Strunz-mindat (2024):
8.DC.30

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
C : With only medium-sized cations, (OH, etc.):RO4 = 1:1 and < 2:1
Dana 8th ed.:
42.11.10.3

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
11 : (AB)3(XO4)2Zq·xH2O
Hey's CIM Ref.:
19.12.25

19 : Phosphates
12 : Phosphates of Mn

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
PlaeIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of PseudolaueiteHide

Lustre:
Sub-Vitreous, Resinous
Transparency:
Transparent, Translucent
Colour:
Orange-yellow to amber-yellow
Streak:
White
Hardness:
3 on Mohs scale
Comment:
White to pale yellow
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
2.463 g/cm3 (Measured)    2.51 g/cm3 (Calculated)

Optical Data of PseudolaueiteHide

Type:
Biaxial (+)
RI values:
nα = 1.626 nβ = 1.650 nγ = 1.686
2V:
Measured: 80° , Calculated: 80°
Birefringence:
0.060
Max Birefringence:
δ = 0.060
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
weak
Optical Extinction:
Z=b, X^c = 2°, Y^a = 12°
Pleochroism:
Weak
Comments:
X = Y pale yellow, Z = yellow

Chemistry of PseudolaueiteHide

Mindat Formula:
Mn2+Fe3+2(PO4)2(OH)2 · 8H2O
Elements listed:
Fe, H, Mn, O, P - search for minerals with similar chemistry

Crystallography of PseudolaueiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/a
Cell Parameters:
a = 9.59 Å, b = 7.42 Å, c = 10.16 Å
β = 104.43°
Ratio:
a:b:c = 1.292 : 1 : 1.369
Unit Cell V:
700.16 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Pseudohexagonal tablets, also nearly tabulat to slightly columnar

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0000193PseudolaueiteBaur W H (1969) A comparison of the crystal structures of pseudolaueite and laueite American Mineralogist 54 1312-132319690293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
9.926 Å(100)
5.869 Å(70)
4.678 Å(30)
3.908 Å(30)
3.472 Å(40)
3.186 Å(30)
3.069 Å(30)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 4b: Highly evolved igneous rocks>3.0
34 : Complex granite pegmatites
Stage 7: Great Oxidation Event<2.4
47a : [Near-surface hydration of prior minerals]
47c : [Carbonates, phosphates, borates, nitrates]
47e : [Vanadates, chromates, manganates]
Geological Setting:
Late stage phosphate mineralization in granite pegmatite

Type Occurrence of PseudolaueiteHide

Type Locality:
ⓘ Hagendorf South Pegmatite, Hagendorf, Waidhaus, Neustadt an der Waldnaab District, Upper Palatinate, Bavaria, Germany
General Appearance of Type Material:
Amber-yellow pseudohexagonal plates.
Geological Setting of Type Material:
Late stage crystallization of phosphates in a granite pegmatite
Associated Minerals at Type Locality:
StrunziteStewartiteMitridatiteLaueiteJahnsite Subgroup

Other Language Names for PseudolaueiteHide

Relationship of Pseudolaueite to other SpeciesHide

Structurally related to group(s):
Laueite GroupM12+M23+M33+(PO4)2(OH)2 · 8H2O

Common AssociatesHide

Associated Minerals Based on Photo Data:
15 photos of Pseudolaueite associated with StewartiteMn2+Fe3+2(PO4)2(OH)2 · 8H2O
5 photos of Pseudolaueite associated with RockbridgeiteFe2+Fe3+4(PO4)3(OH)5
4 photos of Pseudolaueite associated with LaueiteMn2+Fe3+2(PO4)2(OH)2 · 8H2O
3 photos of Pseudolaueite associated with StrunziteMn2+Fe3+2(PO4)2(OH)2 · 6H2O
2 photos of Pseudolaueite associated with WhitmoreiteFe2+Fe3+2(PO4)2(OH)2 · 4H2O
2 photos of Pseudolaueite associated with ChalcedonySiO2
1 photo of Pseudolaueite associated with CacoxeniteFe3+24AlO6(PO4)17(OH)12 · 75H2O
1 photo of Pseudolaueite associated with MolybdeniteMoS2
1 photo of Pseudolaueite associated with QuartzSiO2
1 photo of Pseudolaueite associated with PhosphosideriteFePO4 · 2H2O

Related Minerals - Strunz-mindat GroupingHide

8.DC.IanbruceiteZn2(AsO4)(OH) · 3H2OMon. 2/m : P21/b
8.DC.CésarferreiraiteFe2+ Fe3+2(AsO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.FerrivauxiteFe3+Al2(PO4)2(OH)3 · 5H2OTric. 1 : P1
8.DC.05NissoniteCu2Mg2(PO4)2(OH)2 · 5H2OMon. 2/m : B2/b
8.DC.07EuchroiteCu2(AsO4)(OH) · 3H2OOrth. 2 2 2 : P21 21 21
8.DC.10LegranditeZn2(AsO4)(OH) · H2OMon. 2/m : P21/b
8.DC.12StrashimiriteCu8(AsO4)4(OH)4 · 5H2OMon.
8.DC.15ArthuriteCuFe3+2(AsO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15EarlshannoniteMn2+Fe3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15OjuelaiteZnFe3+2(AsO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15WhitmoreiteFe2+Fe3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15Cobaltarthurite(Co,Mg)Fe3+2(AsO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15BendadaiteFe2+Fe3+2(AsO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15KunatiteCuFe3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15UM2006-27-PO:FeHZnZnFe3+2(PO4)2(OH)2 · 4H2OMon.
8.DC.15UKI-2006-(PO:AlCuFeH)Fe2+Al3+2(PO4)2(OH)2 · 4H2O
8.DC.17KleemaniteZnAl2(PO4)2(OH)2 · 3H2OMon.
8.DC.20BermaniteMn2+Mn3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P2/b
8.DC.20CoralloiteMn2+Mn3+2(AsO4)2(OH)2 · 4H2OTric. 1 : P1
8.DC.20MagnesiobermaniteMgMn3+2(PO4)2(OH)2 · 4H2OMon. 2 : P21
8.DC.22KovdorskiteMg2(PO4)(OH) · 3H2OMon. 2/m : P21/b
8.DC.25FerristrunziteFe3+Fe3+2(PO4)2(OH)3 · 5H2OTric.
8.DC.25FerrostrunziteFe2+Fe3+2(PO4)2(OH)2 · 6H2OTric.
8.DC.25MetavauxiteFe2+Al2(PO4)2(OH)2 · 8H2OMon. 2/m : P21/b
8.DC.25MetavivianiteFe2+Fe3+2(PO4)2(OH)2 · 6H2OTric. 1 : P1
8.DC.25StrunziteMn2+Fe3+2(PO4)2(OH)2 · 6H2OTric. 1 : P1
8.DC.25ZincostrunziteZnFe3+2(PO4)2(OH)2 · 6.5H2OTric. 1 : P1
8.DC.27BerauniteFe3+6(PO4)4O(OH)4 · 6H2OMon. m : Bb
8.DC.27TvrdýiteFe2+Fe3+2 Al3(PO4)4(OH)5(H2O)4 · 2H2OMon. 2/m : B2/b
8.DC.27ZincoberauniteZnFe3+5(PO4)4(OH)5 · 6H2OMon. 2/m : B2/b
8.DC.30GordoniteMgAl2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30LaueiteMn2+Fe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30MangangordoniteMn2+Al2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30ParavauxiteFe2+Al2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30SigloiteFe3+Al2(PO4)2(OH)3 · 7H2OTric. 1 : P1
8.DC.30StewartiteMn2+Fe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30UshkoviteMgFe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30FerrolaueiteFe2+Fe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30Kastningite(Mn2+,Fe2+,Mg)Al2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30MaghrebiteMgAl2(AsO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30NordgauiteMnAl2(PO4)2(F,OH)2 · 5H2OTric. 1 : P1
8.DC.30Kayrobertsonite[MnAl2(PO4)2(OH)2(H2O)4] · 2H2OTric. 1 : P1
8.DC.30KummeriteMn2+Fe3+Al(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.32TinticiteFe3+3(PO4)2(OH)3 · 3H2OTric. 1 : P1
8.DC.32KamarizaiteFe3+3(AsO4)2(OH)3 · 3H2OTric. 1 : P1
8.DC.35VauxiteFe2+Al2(PO4)2(OH)2 · 6H2OTric. 1 : P1
8.DC.37VantasseliteAl4(PO4)3(OH)3 · 9H2OOrth.
8.DC.40CacoxeniteFe3+24AlO6(PO4)17(OH)12 · 75H2OHex. 6/m : P63/m
8.DC.45Gormanite(Fe2+,Mg)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2OTric.
8.DC.45Souzalite(Mg,Fe2+)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2OTric. 1
8.DC.47KingiteAl3(PO4)2F2(OH) · 7H2OTric.
8.DC.50WavelliteAl3(PO4)2(OH,F)3 · 5H2OOrth. mmm (2/m 2/m 2/m)
8.DC.50AllanpringiteFe3+3(PO4)2(OH)3 · 5H2OMon. 2/m : P21/m
8.DC.50FluorwavelliteAl3(PO4)2(OH)2F · 5H2OOrth. mmm (2/m 2/m 2/m)
8.DC.52KribergiteAl5(PO4)3(SO4)(OH)4 · 4H2OTric. 1 : P1
8.DC.55MapimiteZn2Fe3+3(AsO4)3(OH)4 · 10H2OMon. m : Bm
8.DC.57OgdensburgiteCa2Fe3+4(Zn,Mn2+)(AsO4)4(OH)6 · 6H2OOrth. mmm (2/m 2/m 2/m) : Cmmm
8.DC.60Nevadaite(Cu2+,Al,V3+)6Al8(PO4)8F8(OH)2 · 22H2OOrth. mmm (2/m 2/m 2/m)
8.DC.60CloncurryiteCu0.5(VO)0.5Al2(PO4)2F2 · 5H2OMon. 2/m : P21/b
8.DC.62KenngottiteMn2+3Fe3+4(PO4)4(OH)6(H2O)2 Mon. 2/m : P2/b
8.DC.67MolinelloiteCu(H2O)(OH)V4+O(V5+O4)Tric. 1 : P1
8.DC.70WhitecapsiteH16Fe2+5Fe3+14Sb3+6(AsO4)18O16 · 120H2OHex. 6/m : P63/m
8.DC.75HeimitePbCu2(AsO4)(OH)3 · 2H2OMon. 2/m
8.DC.80LedneviteCu[PO3(OH)] · H2OMon. 2/m : P21/b

Fluorescence of PseudolaueiteHide

In UV light:
Not fluorescent in UV

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.

Internet Links for PseudolaueiteHide

References for PseudolaueiteHide

Localities for PseudolaueiteHide

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 references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Germany (TL)
 
  • Bavaria
    • Upper Palatinate
      • Neustadt an der Waldnaab District
        • Waidhaus
          • Hagendorf
Naturwissenschaften (1956) +2 other references
Dill et al. (2008)
      • Tirschenreuth District
        • Erbendorf
          • Hopfau
Pöllmann et al. (2005)
New Zealand
 
  • Tasman Region
    • Glenhope
Stott (pers. notes)
Portugal
 
  • Guarda
    • Sabugal
      • Bendada
Schnorrer-Köhler (1991)
  • Viseu
    • Mangualde
      • Mangualde (Mesquitela e Cunha Alta)
Rewitzer et al. (1984) +1 other reference
USA
 
  • California
    • San Diego County
      • Anza-Borrego Desert State Park
        • Elder Canyon
Van Nostrand Reinholt Press: 312. +1 other reference
  • Maine
    • Oxford County
      • Greenwood
        • Uncle Tom Mountain
Falster et al. (2019)
      • Newry
King et al. (1994)
  • New Hampshire
    • Grafton County
      • Groton
Moore (1965)
Rocks & Min.
  • North Carolina
    • Cleveland County
      • Kings Mountain
Jason B. Smith (visual identification)
  • South Dakota
    • Custer County
      • Custer Mining District
        • Pringle
          • Cicero Peak
King (1977)
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