Meurigite-Na
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About Meurigite-Na
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.
Classification of Meurigite-Na
Approved
Approval year:
2007
8.DK.05
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
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
42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
13 : Miscellaneous
Physical Properties of Meurigite-Na
Silky
Comment:
Longitudinal striations on the surfaces of laths
Colour:
white, creamy, or yellow
Streak:
white
Hardness:
3 on Mohs scale
Tenacity:
Flexible
Density:
2.94(2) g/cm3 (Measured) 2.954 g/cm3 (Calculated)
Optical Data of Meurigite-Na
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.
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
none
Pleochroism:
Non-pleochroic
Chemical Properties of Meurigite-Na
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-Na
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)°
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 Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
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-Na
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-Na
Meurigite (in part)
Other Language Names for Meurigite-Na
Armenian:Meurigite-Na
Common Associates
Associated Minerals Based on Photo Data:
3 photos of Meurigite-Na associated with Tinsleyite | KAl2(PO4)2(OH) · 2H2O |
2 photos of Meurigite-Na associated with Natrodufrénite | NaFe2+Fe3+5(PO4)4(OH)6 · 2H2O |
2 photos of Meurigite-Na associated with Cyrilovite | NaFe3+3(PO4)2(OH)4 · 2H2O |
1 photo of Meurigite-Na associated with Lakebogaite | CaNaFe3+2H(UO2)2(PO4)4(OH)2 · 8H2O |
1 photo of Meurigite-Na associated with Chalcosiderite-Turquoise Series |
Related Minerals - Nickel-Strunz Grouping
8.DJ.05 | Johnwalkite | K(Mn2+,Fe2+,Fe3+)2(Nb5+,Ta5+)(PO4)2O2 · 2(H2O,OH) | Orth. |
8.DJ.05 | Olmsteadite | KFe2+2(Nb5+,Ta5+)(PO4)2O2 · 2H2O | Orth. |
8.DJ.10 | Gatumbaite | CaAl2(PO4)2(OH)2 · H2O | Mon. 2/m : P2/m |
8.DJ.15 | Camgasite | CaMg(AsO4)(OH) · 5H2O | Mon. 2/m : P21/m |
8.DJ.20 | Phosphofibrite | (H2O,K)3.5Fe8(PO4)6(OH)7 · 5H2O | Mon. 2/m |
8.DJ.20 | Meurigite-K | KFe3+8(PO4)6(OH)7 · 6.5H2O | Mon. 2/m : B2/b |
8.DJ.25 | Jungite | Ca2Zn4Fe3+8(PO4)9(OH)9 · 16H2O | Orth. |
8.DJ.30 | Wycheproofite | NaAlZr(PO4)2(OH) · H2O | Tric. |
8.DJ.35 | Ercitite | Na2Mn3+2(PO4)2(OH)2 · 4H2O | Mon. |
8.DJ.40 | Mrázekite | Bi2Cu3(PO4)2O2(OH)2 · H2O | Mon. 2/m |
8.DJ.45 | Attikaite | Ca3Cu2Al2(AsO4)4(OH)4 · 2H2O | Orth. mmm (2/m 2/m 2/m) : Pban |
Related Minerals - Dana Grouping (8th Ed.)
42.13.14.1 | Meurigite-K | KFe3+8(PO4)6(OH)7 · 6.5H2O | Mon. 2/m : B2/b |
42.13.14.3 | Phosphofibrite | (H2O,K)3.5Fe8(PO4)6(OH)7 · 5H2O | Mon. 2/m |
Other Information
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-Na
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-Na
mindat.org URL:
https://www.mindat.org/min-32197.html
Please feel free to link to this page.
Please feel free to link to this page.
External Links:
Mineral Dealers:
Localities for Meurigite-Na
Locality List




All localities listed without proper references should be considered as questionable.
Australia | |
| 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. |
| 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. | |
| P. Sutton (2007): Cyrilovite and natrodufrenite from near Campbells Creek, Victoria. Australian Journal of Mineralogy, 13(2), 65-71. |
| 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 | |
| Anatoly Kasatkin. |
USA (TL) | |
| 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. |
Silver Coin Mine, Valmy, Iron Point Mining District, Humboldt Co., Nevada, USA