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Meurigite-Na Mineral Data

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General Meurigite-Na Information

Help on Chemical  Formula: Chemical Formula: [Na(H2O)2.5][Fe+++8(PO4)6(OH)7(H2O)4]
Help on Composition: Composition: Molecular Weight = 1,239.22 gm
   Potassium    0.28 %  K     0.34 % K2O
   Sodium       1.60 %  Na    2.15 % Na2O
   Calcium      0.16 %  Ca    0.23 % CaO
   Magnesium    0.02 %  Mg    0.03 % MgO
   Aluminum     2.87 %  Al    5.43 % Al2O3
   Vanadium     0.49 %  V     0.88 % V2O5
   Iron        29.88 %  Fe   42.72 % Fe2O3
   Copper       0.21 %  Cu    0.26 % CuO
   Phosphorus  14.40 %  P    32.99 % P2O5
   Hydrogen     1.68 %  H    14.97 % H2O
   Oxygen      48.42 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na0.86K0.09Ca0.05(H2O)1.9(H3O)0.6Fe3+6.63Al1.32Cu0.04Mg0.016(P0.96)6(V5+0.02)6(O4) (OH)7�4(H2O)
Help on Environment: Environment: Occurs very late in a paragenetic sequence of secondary minerals in a sulfide mine. Meurigite group.
Help on IMA Status: IMA Status: Approved IMA 2007 (Dana # Added)
Help on Locality: Locality: Silver Coin mine, Valmy, Iron Point district, Humboldt County, Nevada, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the Na analog of meurigite-K.
Help on Name Pronunciation: Name Pronunciation: Meurigite-Na + Pronunciation Say MEURIGITE-NA
Help on Synonym: Synonym: IMA2007-024
 

Meurigite-Na Image

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  Meurigite-Na

Comments: B&W image of sprays of meurigite-Na with turquoise, intergrown kidwellite/lipscombite, and crandallite on goethite. (AmMin, v94:720).
Location: Silver Coin mine, Valmy, Iron Point district, Humboldt County, Nevada, USA. Scale: Largest Spray = 1 mm.
© American Mineralogist

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  Meurigite-Na

Comments: SEM image of meurigite-Na crystals. (AmMin, v94:720).
Location: Silver Coin mine, Valmy, Iron Point district, Humboldt County, Nevada, USA. Scale: See Image.
© American Mineralogist

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  Meurigite-Na

Comments: Pale pearly yellow platy Meurigite-Na crystals all over vuggy matrix.
Location: Tom's Phosphate quarry, Kapunda, South Australia, Australia. Scale: Picture size 5 mm.
© Tom Loomis / Dakota Matrix

Meurigite-Na Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =5.5614:1:3.7579
Help on Cell Dimensions: Cell Dimensions: a = 28.835, b = 5.1848, c = 19.484, Z = 4; beta = 106.983° V = 2,785.90 Den(Calc)= 2.95
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 9.349(1), 3.206(0.4), 3.107(0.3),1.574(0.2), 4.318(0.2), 4.843(0.2), 13.8(0.2), 2.971(0.15),
 

Physical Properties of Meurigite-Na

Help on Cleavage: Cleavage: {001} Distinct
Help on Color: Color: Cream, Pale yellow.
Help on Density: Density: 2.94
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Splintery - Thin, elongated fractures produced by intersecting good cleavages or partings (e.g. hornblende).
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Silky
Help on Streak: Streak: white
 

Optical Properties of Meurigite-Na

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.035 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.038 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2556,KPDmeas= 0.2565,KC= 0.2658
Ncalc = 1.78
Help on Optical Data: Optical Data: Biaxial (-), a=1.74, b=1.759, g=1.763, bire=0.0230, 2V(Calc)=48, 2V(Meas)=50. Dispersion dispersion not observed.
 

Calculated Properties of Meurigite-Na

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.91 gm/cc
note: Specific Gravity of Meurigite-Na =2.94 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0066036942
Boson Index = 0.9933963058
Help on Photoelectric: Photoelectric: PEMeurigite-Na = 9.87 barns/electron
U=PEMeurigite-Na x relectron= 28.70 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 4.05 (Gamma Ray American Petroleum Institute Units)
Concentration of Meurigite-Na per GRapi unit = 24.69 (%)

Estimated Radioactivity from Meurigite-Na - barely detectable

 

Meurigite-Na Classification

Help on  Dana Class: Dana Class: 42.12.06.02 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.12)with miscellaneous formulae
  (42.12.06)Meurigite group
 
42.12.06.01 Meurigite-K! [K(H2O)2.5][Fe8(PO4)6(OH)7(H2O)4] C 2/c 2/m
 
42.12.06.02 Meurigite-Na! [Na(H2O)2.5][Fe8(PO4)6(OH)7(H2O)4] C 2/c 2/m
Help on  Strunz Class: Strunz Class: 08.DJ.20 08 - PHOSPHATES, ARSENATES, VANADATES
  08.D - Phosphates, etc
  08.DJ -With large and medium-sized cations, (OH, etc.):RO4 = 1:l
 
08.DJ.20 Meurigite-K! [K(H2O)2.5][Fe8(PO4)6(OH)7(H2O)4] C 2/c 2/m
 
08.DJ.20 Phosphofibrite KCuFe15(PO4)12(OH)12•12(H2O) Pbmn,Pnmn 2/m 2/m 2/m
 
08.DJ.20 Meurigite-Na! [Na(H2O)2.5][Fe8(PO4)6(OH)7(H2O)4] C 2/c 2/m
 

Other Meurigite-Na Information

Help on References: References: NAME( AmMin, v94:720) PHYS. PROP.(AmMin, v94:720) OPTIC PROP.(AmMin, v94:720)
Help on See Also: See Also: Links to other databases for Meurigite-Na :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Print or Cut-and-Paste your Meurigite-Na Specimen Label here :

Meurigite-Na

[Na(H2O)2.5][Fe+++8(PO4)6(OH)7(H2O)4]
Dana No: 42.12.06.02 Strunz No: 08.DJ.20
Locality:

 

Notes:

 

 
   
 


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