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Pseudolaueite

A valid IMA mineral species - grandfathered
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02693290017271926002093.jpg
Pseudolaueite, etc.

Hagendorf South Pegmatite, Hagendorf, Waidhaus, Neustadt an der Waldnaab District, Upper Palatinate, Bavaria, Germany
03540560017271926033309.jpg
Pseudolaueite

Hagendorf South Pegmatite, Hagendorf, Waidhaus, Neustadt an der Waldnaab District, Upper Palatinate, Bavaria, Germany
01589100017271926079628.jpg
Pseudolaueite

Hagendorf South Pegmatite, Hagendorf, Waidhaus, Neustadt an der Waldnaab District, Upper Palatinate, Bavaria, Germany
02693290017271926002093.jpg
Pseudolaueite, etc.

Hagendorf South Pegmatite, Hagendorf, Waidhaus, Neustadt an der Waldnaab District, Upper Palatinate, Bavaria, Germany
03540560017271926033309.jpg
Pseudolaueite

Hagendorf South Pegmatite, Hagendorf, Waidhaus, Neustadt an der Waldnaab District, Upper Palatinate, Bavaria, Germany
01589100017271926079628.jpg
Pseudolaueite

Hagendorf South Pegmatite, Hagendorf, Waidhaus, Neustadt an der Waldnaab District, Upper Palatinate, Bavaria, Germany
02693290017271926002093.jpg
Pseudolaueite, etc.

Hagendorf South Pegmatite, Hagendorf, Waidhaus, Neustadt an der Waldnaab District, Upper Palatinate, Bavaria, Germany
02002970017271926115257.jpg
Pseudolaueite

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

01536460017347622353816.jpg
Max von Laue
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.)

The species laueite itself was named by Hugo Strunz in 1954 in honour of Max Felix Theodor von Laue (1879-1960), professor of physics at the Kaiser-Wilhelm Institute (now Max Planck Institute), Berlin, Germany and in the University of Göttingen, Göttingen, Germany. Laue was the first to verify that minerals had a regular atomic arrangement, as had been predicted by previous physicists. He directed the original experiments using x-rays to obtain a diffraction pattern that became the method for determining crystal structures.

Polymorph of:
Laueite, Stewartite
Related to the Laueite Group.


Unique IdentifiersHide

Mindat ID:
3297
Long-form identifier:
mindat:1:1:3297:7

Similar NamesHide

PseudoliteA variety of TalcMg3Si4O10(OH)2

IMA Classification of PseudolaueiteHide

IMA status:
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Mn2+Fe3+2(PO4)2(OH)2·8H2O

Classification of PseudolaueiteHide

Strunz-mindat (2026):
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 for Standard
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
Based on recorded range of RI values above.

Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.

Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.

Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.

Surface Relief:
High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).

This shows the grain boundary and Becke line effect under plane-polarised light, based on the contrast between this mineral's average refractive index and the mounting medium. It does not take into account mineral colouration.
In focus
Interference Figure:
This shows the idealized biaxial acute bisectrix (Bxa) interference figure - the conoscopic view for a grain cut perpendicular to the acute bisectrix, using this mineral's 2V. The two small white dots mark the melatopes - the points where the two optic axes emerge - and are shown only when they fall within the field of view. The coloured bands are isochromatics, and the dark bands are isogyres.

Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
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
Element Weights:
Element% weight
O53.859 %
Fe20.888 %
P11.585 %
Mn10.274 %
H3.393 %

Calculated from ideal end-member formula.
O
Fe
P
Mn
H
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/c
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:
Jahnsite SubgroupLaueiteMitridatiteStewartiteStrunzite

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

Associations Based on Photo Data:
23 photos of Pseudolaueite associated with StewartiteMn2+Fe3+2(PO4)2(OH)2 · 8H2O
7 photos of Pseudolaueite associated with StrunziteMn2+Fe3+2(PO4)2(OH)2 · 6H2O
5 photos of Pseudolaueite associated with Rockbridgeite(Fe2+0.5Fe3+0.5)2Fe3+3(PO4)3(OH)5
5 photos of Pseudolaueite associated with LaueiteMn2+Fe3+2(PO4)2(OH)2 · 8H2O
3 photos of Pseudolaueite associated with QuartzSiO2
3 photos of Pseudolaueite associated with HeterositeFe3+(PO4)
2 photos of Pseudolaueite associated with 'Chalcedony'SiO2
2 photos of Pseudolaueite associated with WhitmoreiteFe2+Fe3+2(PO4)2(OH)2 · 4H2O
1 photo of Pseudolaueite associated with 'Apatite'Ca5(PO4)3A
1 photo of Pseudolaueite associated with MolybdeniteMoS2

Related Minerals - Strunz-mindat GroupingHide

8.DC.FerroberauniteFe2+Fe3+5(PO4)4(OH)5 · 6H2OMon. 2/m : B2/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.IanbruceiteZn2(AsO4)(OH) · 3H2OMon. 2/m : P21/c
8.DC.05NissoniteCu2Mg2(PO4)2(OH)2 · 5H2OMon. 2/m : B2/b
8.DC.07EuchroiteCu2(AsO4)(OH) · 3H2OOrth. 222 : P212121
8.DC.10LegranditeZn2(AsO4)(OH) · H2OMon. 2/m : P21/c
8.DC.12StrashimiriteCu8(AsO4)4(OH)4 · 5H2OMon.
8.DC.15EarlshannoniteMn2+Fe3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P21/c
8.DC.15KunatiteCuFe3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P21/c
8.DC.15'UM2006-27-PO:FeHZn'ZnFe3+2(PO4)2(OH)2 · 4H2OMon.
8.DC.15'UKI-2006-(PO:AlCuFeH)'Fe2+Al3+2(PO4)2(OH)2 · 4H2O
8.DC.15CobaltarthuriteCoFe3+2(AsO4)2(OH)2 · 4H2OMon. 2/m : P21/c
8.DC.15ArthuriteCuFe3+2(AsO4)2(OH)2 · 4H2OMon. 2/m : P21/c
8.DC.15OjuelaiteZnFe3+2(AsO4)2(OH)2 · 4H2OMon. 2/m : P21/c
8.DC.15WhitmoreiteFe2+Fe3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P21/c
8.DC.15BendadaiteFe2+Fe3+2(AsO4)2(OH)2 · 4H2OMon. 2/m : P21/c
8.DC.17KleemaniteZnAl2(PO4)2(OH)2 · 3H2OMon.
8.DC.20MagnesiobermaniteMgMn3+2(PO4)2(OH)2 · 4H2OMon. 2 : P21
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.22KovdorskiteMg2(PO4)(OH) · 3H2OMon. 2/m : P21/c
8.DC.25ZincostrunziteZnFe3+2(PO4)2(OH)2 · 6.5H2OTric. 1 : P1
8.DC.25MetavauxiteFe2+Al2(PO4)2(OH)2 · 8H2OMon. 2/m : P21/c
8.DC.25MetavivianiteFe2+Fe3+2(PO4)2(OH)2 · 6H2OTric. 1 : P1
8.DC.25FerristrunziteFe3+Fe3+2(PO4)2(OH)3 · 5H2OTric.
8.DC.25StrunziteMn2+Fe3+2(PO4)2(OH)2 · 6H2OTric. 1 : P1
8.DC.25FerrostrunziteFe2+Fe3+2(PO4)2(OH)2 · 6H2OTric.
8.DC.27BerauniteFe3+6(PO4)4O(OH)4 · 6H2OMon. m : Bb
8.DC.27TvrdýiteFe2+Fe3+2Al3(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.30MaghrebiteMgAl2(AsO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30FerrolaueiteFe2+Fe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30UshkoviteMgFe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30LaueiteMn2+Fe3+2(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.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.30MangangordoniteMn2+Al2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30StewartiteMn2+Fe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30GordoniteMgAl2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30Kastningite(Mn2+,Fe2+,Mg)Al2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.32KamarizaiteFe3+3(AsO4)2(OH)3 · 3H2OTric. 1 : P1
8.DC.32TinticiteFe3+3(PO4)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.45SouzaliteMg3Al4(PO4)4(OH)6 · 2H2OTric. 1
8.DC.45Gormanite(Fe2+,Mg)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2OTric.
8.DC.47KingiteAl3(PO4)2F2(OH) · 7H2OTric.
8.DC.50AllanpringiteFe3+3(PO4)2(OH)3 · 5H2OMon. 2/m : P21/m
8.DC.50FluorwavelliteAl3(PO4)2(OH)2F · 5H2OOrth. mmm(2/m2/m2/m)
8.DC.50WavelliteAl3(PO4)2(OH)3 · 5H2OOrth. mmm(2/m2/m2/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/m2/m2/m) : Cmmm
8.DC.60CloncurryiteCu0.5(VO)0.5Al2(PO4)2F2 · 5H2OMon. 2/m : P21/c
8.DC.60Nevadaite(Cu2+,Al,V3+)6Al8(PO4)8F8(OH)2 · 22H2OOrth. mmm(2/m2/m2/m)
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 : P21/c
8.DC.80LedneviteCu[PO3(OH)] · H2OMon. 2/m : P21/c

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

Showing 15 localities.

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.
Hide all sections | Show all sections

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
 
  • Bavaria
    • Upper Palatinate
      • Neustadt an der Waldnaab District
        • Waidhaus
          • Hagendorf
Christof Schäfer Collection
Naturwissenschaften (1956) +2 other references
Dill et al. (2008)
      • Tirschenreuth District
        • Erbendorf
          • Grötschenreuth
Pöllmann et al. (2005)
New Zealand
 
  • Tasman Region
    • Glenhope
Stott (pers. notes)
Portugal
 
  • Guarda
    • Sabugal
      • Bendada
Schnorrer-Köhler et al. (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
Pemberton (1983) +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
        • Fourmile
Thomas Loomis Collection
        • Pringle
          • Cicero Peak
King (1977)
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