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Meurigite-Na

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About Meurigite-NaHide

Formula:
NaFe3+8(PO4)6(OH)7 · 6.5H2O
Colour:
white, creamy, or yellow
Lustre:
Silky
Hardness:
3
Specific Gravity:
2.94
Crystal System:
Monoclinic
Name:
For the mineral meurigite and its sodium content.
The sodium analogue of meurigite-K.


Classification of Meurigite-NaHide

Approved
Approval Year:
2007
8.DJ.20

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
J : With large and medium-sized cations, (OH, etc.):RO4 = 1:1
42.13.14.2

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
13 : Miscellaneous

Physical Properties of Meurigite-NaHide

Silky
Comment:
Longitudinal striations on the surfaces of laths
Colour:
white, creamy, or yellow
Streak:
white
Hardness:
Tenacity:
Flexible
Density:
2.94(2) g/cm3 (Measured)     2.954 g/cm3 (Calculated)

Optical Data of Meurigite-NaHide

Type:
Biaxial (-)
RI values:
nα = 1.740(3) nβ = 1.759(3) nγ = 1.763(3)
2V:
Measured: 50° (10), Calculated: 49°
Max Birefringence:
δ = 0.023
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
none
Pleochroism:
Non-pleochroic

Chemical Properties of Meurigite-NaHide

Formula:
NaFe3+8(PO4)6(OH)7 · 6.5H2O
IMA Formula:
[Na(H2O)2.5][Fe3+8(PO4)6(OH)7(H2O)4]

Crystallography of Meurigite-NaHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Setting:
C2/c
Cell Parameters:
a = 28.835(2) Å, b = 5.1848(4) Å, c = 19.484(1) Å
β = 106.983(6)°
Ratio:
a:b:c = 5.561 : 1 : 3.758
Unit Cell V:
2,785.90 ų (Calculated from Unit Cell)
Z:
4

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
13.80 Å(20)
9.349 Å(100)
4.843 Å(20)
4.318 Å(20)
3.206 Å(40)
3.107 Å(30)
2.971 Å(15)
1.574 Å(20)

Type Occurrence of Meurigite-NaHide

General Appearance of Type Material:
radial sprays of cream-colored, flattened fibers (thin laths) to 0.4 mm in length
Place of Conservation of Type Material:
Natural History Museum of Los Angeles County under catalog numbers 57659 and 57660.
Geological Setting of Type Material:
A late-stage, low-temperature, secondary mineral in complex phosphate assemblages rich in Fe3+ and Na.
Associated Minerals at Type Locality:

Synonyms of Meurigite-NaHide

Other Language Names for Meurigite-NaHide

Armenian:Meurigite-Na

Common AssociatesHide

Associated Minerals Based on Photo Data:
3 photos of Meurigite-Na associated with TinsleyiteKAl2(PO4)2(OH) · 2H2O
2 photos of Meurigite-Na associated with NatrodufréniteNaFe2+Fe3+5(PO4)4(OH)6 · 2H2O
2 photos of Meurigite-Na associated with CyriloviteNaFe3+3(PO4)2(OH)4 · 2H2O
1 photo of Meurigite-Na associated with LakebogaiteCaNaFe3+2H(UO2)2(PO4)4(OH)2 · 8H2O
1 photo of Meurigite-Na associated with Chalcosiderite-Turquoise Series

Related Minerals - Nickel-Strunz GroupingHide

8.DJ.05JohnwalkiteK(Mn2+,Fe2+,Fe3+)2(Nb5+,Ta5+)(PO4)2O2 · 2(H2O,OH)Orth.
8.DJ.05OlmsteaditeKFe2+2(Nb5+,Ta5+)(PO4)2O2 · 2H2OOrth.
8.DJ.10GatumbaiteCaAl2(PO4)2(OH)2 · H2OMon. 2/m : P2/m
8.DJ.15CamgasiteCaMg(AsO4)(OH) · 5H2OMon. 2/m : P21/m
8.DJ.20Phosphofibrite(H2O,K)3.5Fe8(PO4)6(OH)7 · 5H2OMon. 2/m
8.DJ.20Meurigite-KKFe3+8(PO4)6(OH)7 · 6.5H2OMon. 2/m : B2/b
8.DJ.25JungiteCa2Zn4Fe3+8(PO4)9(OH)9 · 16H2OOrth.
8.DJ.30WycheproofiteNaAlZr(PO4)2(OH) · H2OTric.
8.DJ.35ErcititeNa2Mn3+2(PO4)2(OH)2 · 4H2OMon.
8.DJ.40MrázekiteBi2Cu3(PO4)2O2(OH)2 · H2OMon. 2/m
8.DJ.45AttikaiteCa3Cu2Al2(AsO4)4(OH)4 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pban

Related Minerals - Dana Grouping (8th Ed.)Hide

42.13.14.1Meurigite-KKFe3+8(PO4)6(OH)7 · 6.5H2OMon. 2/m : B2/b
42.13.14.3Phosphofibrite(H2O,K)3.5Fe8(PO4)6(OH)7 · 5H2OMon. 2/m

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 Meurigite-NaHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Kampf, A.R., J.J.Pluth, & Y. Chen (2007): The crystal structure of meurigite. American Mineralogist 92, 1518-1534.
A. R. Kampf, P. M. Adams, U. Kolitsch and I. M. Steele (2009): Meurigite-Na, a new species, and the relationship between phosphofibrite and meurigite. Am. Mineral. 94, 720-727.

Internet Links for Meurigite-NaHide

Localities for Meurigite-NaHide

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.
Australia
 
  • South Australia
    • Mt Lofty Ranges
      • North Mt Lofty Ranges
        • Barossa Valley
          • Angaston
Kampf, A.R., Adams, P.M., Kolitsch, U., Steele, I.M. (2009) Meurigite-Na, a new species, and the relationship between phosphofibrite and meurigite. American Mineralogist 94:(5-6), 720-727.
        • Kapunda
Vince Peisley
A. R. Kampf, P. M. Adams, U. Kolitsch and I. M. Steele (2009): Meurigite-Na, a new species, and the relationship between phosphofibrite and meurigite. Am. Mineral. 94, 720-727.
  • Victoria
    • Mount Alexander Shire
      • Castlemaine
        • Campbells Creek
P. Sutton (2007): Cyrilovite and natrodufrenite from near Campbells Creek, Victoria. Australian Journal of Mineralogy, 13(2), 65-71.
    • Swan Hill Rural City
      • Lake Boga
Mills, S. J., Birch, W. D., Kolitsch, U., Mumme, W. G. & Grey, I. E. (2008) Lakebogaite, CaNaFe3+2H(UO2)2(PO4)4(OH)2(H2O)8, a new uranyl phosphate with a unique crystal structure from Victoria, Australia, American Mineralogist, 93(4), 691–697.; Mills, S. J. & Birch, W. D. (2010) Uranmineralien aus dem Lake-Boga-Granit, Victoria, Australien. Mineralien-Welt, 21(3), 62–67. (In German)
Czech Republic
 
  • Plzeň Region
    • Rokycany District
Anatoly Kasatkin.
USA (TL)
 
  • Nevada
    • Humboldt Co.
      • Iron Point Mining District
        • Valmy
A. R. Kampf, P. M. Adams, U. Kolitsch and I. M. Steele (2009): Meurigite-Na, a new species, and the relationship between phosphofibrite and meurigite. Am. Mineral. 94, 720-727.
 
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