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Pseudolaueite Mineral Data

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General Pseudolaueite Information

Help on Chemical  Formula: Chemical Formula: Mn++Fe+++2(PO4)2(OH)2•7-8(H2O)
Help on Composition: Composition: Molecular Weight = 516.70 gm
   Manganese   10.63 %  Mn   13.73 % MnO
   Iron        21.62 %  Fe   30.91 % Fe2O3
   Phosphorus  11.99 %  P    27.47 % P2O5
   Hydrogen     3.12 %  H    27.89 % H2O
   Oxygen      52.64 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mn2+Fe3+2(PO4)2(OH)2•7(H2O)
Help on Environment: Environment: As incrustations and replacements of stewartite crystals in a complex zoned granite pegmatite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1956
Help on Locality: Locality: Hagendorf, Bavaria, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named from the Greek for false and its relation to laueite, as it is not that species.
Help on Name Pronunciation: Name Pronunciation: Pseudolaueite + Pronunciation Say PSEUDOLAUEITE
Help on Synonym: Synonym: ICSD 15205
  PDF 12-294
 

Pseudolaueite Image

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  Pseudolaueite

Comments: Brownish yellow crystals of pseudolaueite.
Location: Hagendorf, Bavaria, Germany. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Pseudolaueite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.2987:1:1.3723
Help on Cell Dimensions: Cell Dimensions: a = 9.647, b = 7.428, c = 10.194, Z = 2; beta = 104.63° V = 706.80 Den(Calc)= 2.43
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 9.926(1), 5.869(0.7), 3.472(0.4),
 

Physical Properties of Pseudolaueite

Help on Color: Color: Orange.
Help on Density: Density: 2.463
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Pseudolaueite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.015 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.001 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2691,KPDmeas= 0.2655,KC= 0.2695
Ncalc = 1.65 - 1.66
Help on Optical Data: Optical Data: Biaxial (+), a=1.626, b=1.65, g=1.686, bire=0.0600, 2V(Calc)=80, 2V(Meas)=80.
 

Calculated Properties of Pseudolaueite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.44 gm/cc
note: Specific Gravity of Pseudolaueite =2.43 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0048401477
Boson Index = 0.9951598523
Help on Photoelectric: Photoelectric: PEPseudolaueite = 9.56 barns/electron
U=PEPseudolaueite x rElectron Density= 23.30 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Pseudolaueite is Not Radioactive
 

Pseudolaueite Classification

Help on  Dana Class: Dana Class: 42.11.10.03 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.11)where (AB)4 (XO4)3 Zq � x(H2O)
  (42.11.10)Laueite Group
 
42.11.10.01 Laueite MnFe2(PO4)2(OH)2•8(H2O) P1 1
 
42.11.10.02 Stewartite MnFe2(PO4)2(OH)2•8(H2O) P1 1
 
42.11.10.03 Pseudolaueite MnFe2(PO4)2(OH)2•7-8(H2O) P 21/a 2/m
 
42.11.10.04 Ushkovite MgFe2(PO4)2(OH)2•8(H2O) P1 1
 
42.11.10.05 Ferrolaueite! FeFe2(PO4)2(OH)2•8(H2O) Tri
Help on  Strunz Class: Strunz Class: 08.DC.30 08 - PHOSPHATES, ARSENATES, VANADATES
  08.D - Phosphates, etc
  08.DC -With only medium-sized cations, (OH, etc.):RO4 = 1:1 and < 2:1
 
08.DC.30 Gordonite MgAl2(PO4)2(OH)2•8(H2O) P1 1
 
08.DC.30 Ferrolaueite! FeFe2(PO4)2(OH)2•8(H2O) Tri
 
08.DC.30 Mangangordonite (Mn,Fe,Mg)Al2(PO4)2(OH)2•8(H2O) P1 1
 
08.DC.30 Laueite MnFe2(PO4)2(OH)2•8(H2O) P1 1
 
08.DC.30 Sigloite FeAl2(PO4)2(OH)3•5(H2O) P1 1
 
08.DC.30 Pseudolaueite MnFe2(PO4)2(OH)2•7-8(H2O) P 21/a 2/m
 
08.DC.30 Paravauxite FeAl2(PO4)2(OH)2•8(H2O) P1 1
 
08.DC.30 Stewartite MnFe2(PO4)2(OH)2•8(H2O) P1 1
 
08.DC.30 Ushkovite MgFe2(PO4)2(OH)2•8(H2O) P1 1
 
08.DC.30 Kastningite! (Mn,Fe,Mg)Al2(PO4)2(OH)2•8(H2O) P1 1
 
08.DC.30 Maghrebite! MgAl2(AsO4)2(OH)2•8H2O P1 1
 

Other Pseudolaueite Information

Help on References: References: NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Pseudolaueite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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Print or Cut-and-Paste your Pseudolaueite Specimen Label here :

Pseudolaueite

Mn++Fe+++2(PO4)2(OH)2•7-8(H2O)
Dana No: 42.11.10.03 Strunz No: 08.DC.30
Locality:

 

Notes:

 

 
   
 


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