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Natrophosphate

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Formula:
Na7(PO4)2F · 19H2O
System:
Isometric
Colour:
White
Lustre:
Vitreous
Hardness:
A rare sodium phosphate hydrate mineral.
Partially decomposes to a white powder on exposure to air, dissolves in H2O.


Classification of Natrophosphate

Approved
8.DN.05

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
N : With only large cations
42.13.9.1

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
13 : Miscellaneous
22.1.3

22 : Phosphates, Arsenates or Vanadates with other Anions
1 : Phosphates, arsenates or vanadates with fluoride

Physical Properties of Natrophosphate

Vitreous
Colour:
White
Hardness (Mohs):

Optical Data of Natrophosphate

Type:
Isotropic

Chemical Properties of Natrophosphate

Formula:
Na7(PO4)2F · 19H2O
Elements listed in formula:

Crystallography of Natrophosphate

Crystal System:
Isometric
Class (H-M):
m3m (4/m 3 2/m) - Hexoctahedral
Space Group:
Fd3c
Cell Parameters:
a = 27.79 Å
Unit Cell Volume:
V 21,461.78 ų (Calculated from Unit Cell)
Z:
56
Morphology:
Rare as octahedra, dodecahedra, or tetrahedra, typically rounded and up to 1 cm in size; also in monomineralic aggregates and veinlets.
Comment:
Range observed: a = 27.79–27.93 A.
X-Ray Powder Diffraction Data:
d-spacingIntensity
8.18 (7)
4.93 (5)
4.06 (5)
3.05 (6)
2.90 (5)
2.67 (10)
2.42 (9)

Type Occurrence of Natrophosphate

Relationship of Natrophosphate to other Species

8.DN.10IsoclasiteCa2PO4(OH) · 2H2O
8.DN.15LermontoviteU4+PO4(OH) · H2O
8.DN.15UrphoiteU64+(PO4)7(OH)3 · 4H2O
8.DN.20VyacheslaviteU4+PO4(OH) · 2.5H2O
22.1.1AmblygoniteLiAlPO4F
22.1.2LacroixiteNaAl(PO4)F
22.1.5NacaphiteNa2Ca(PO4)F
22.1.6ArctiteNa5Ca7Ba(PO4)6F3
22.1.7NefedoviteNa5Ca4(PO4)4F
22.1.9FluorapatiteCa5(PO4)3F
22.1.10HerderiteCaBePO4F
22.1.11IsokiteCaMgPO4F
22.1.12PanasqueiraiteCaMgPO4(OH)
22.1.13BabefphiteBaBePO4F
22.1.14FluelliteAl2(PO4)F2(OH) · 7H2O
22.1.15MinyuliteKAl2(PO4)2F · 4H2O
22.1.16MoriniteNaCa2Al2(PO4)2(OH)F4 · 2H2O
22.1.17BøggilditeNa2Sr2Al2(PO4)F9
22.1.18FluorstrophiteSrCaSr3(PO4)3F
22.1.19ViitaniemiiteNaCaAlPO4F3
22.1.20VäyryneniteMn2+Be(PO4)OH
22.1.21MaxwelliteNaFe3+AsO4F
22.1.22WagneriteMg2PO4F
22.1.23Triplite(Mn2+,Fe2+)2PO4(F,OH)
22.1.24Magniotriplite(Mg,Fe2+,Mn2+)2PO4F
22.1.25ZwieseliteFe2+Mn2+PO4F
22.1.26McauslaniteFe32+Al2(PO4)3(PO3OH)F · 18H2O
22.1.27RichelliteCaFe23+(PO4)2(OH,F)2
22.1.28SvabiteCa5(AsO4)3F
22.1.29TilasiteCaMgAsO4F
22.1.30Johnbaumite-MCa5(AsO4)3OH
22.1.31DurangiteNaAlAsO4F

Other Names for Natrophosphate

Name in Other Languages:

Other Information

Other Information:
Partially decomposes to a white powder on exposure to air, dissolves in H2O.
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 Natrophosphate

Reference List:
KAPUSTIN, Y.L., BYKOVA, A.V., and BUKIN, V.I. (1972) Natrophosphate, a new mineral. International Geological Review, 14, 984-989. Abstract: American Mineralogist (1973): 58: 139.

GENKINA, E.A., and KHOMYAKOV, A.P. (1992) Refinement of the structure of natural natrophosphate. Soviet Physics, Crystallography, 37, 844 845.

HORVÁTH, L., and GAULT, R.G. (1990) The mineralogy of Mont Saint Hilaire. Mineralogical Record, 21, 284 359.

PETERSEN, O.V., FOCKENBERG, T., TOFT, P.C., and RATTAY, M. (1997) Natrophosphate from the Aris phonolites, Windhoek, Namibia. Neues Jahrbuch für Mineralogie, Monathefte, 1997, 511-517.

PETERSEN, O., KHOMYAKOV, A., and SØRENSEN, H. (2001): Natrophosphate from the Ilimaussaq alkaline complex, South Greenland, Geology of Greenland Survey Bulletin, 190, 139-141.

American Mineralogist (1981): 66: 879, 1281.

Internet Links for Natrophosphate

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https://www.mindat.org/min-2862.html
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Localities for Natrophosphate

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Canada
 
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
Horváth, L and Gault, R.A. (1990), The mineralogy of Mont Saint-Hilaire Quebec. Mineralogical Record: 21: 284-359.
Greenland
 
  • Kujalleq
    • Narsaq
Petersen, O.V. (2001): List of all minerals identified in the Ilímaussaq alkaline complex, South Greenland. Geology of Greenland Survey Bulletin. 190, 25-33
        • Kuannersuit Plateau (Kvanefjeld)
          • Kvanefjeld Uranium deposit
Petersen, O., Khomyakov, A., Soerensen, H. (2001): Natrophosphate from the Ilimaussaq alkaline complex South Greenland, South Greenland, Geology of Greenland Survey Bulletin, 190, 139-141
Namibia
 
  • Khomas Region
    • Windhoek District
      • Aris
Petersen, O.V., Fockenberg, T., Toft, P.C. & Rattay, M. (1997): Natrophosphate from the Aris phonolites, Windhoek, Namibia. Neues Jahrbuch für Mineralogie, Monatshefte 1997, 511-517; [http://www.koeln.netsurf.de/~w.steffens/aris.htm]
Russia
 
  • Northern Region
    • Murmanskaja Oblast'
      • Kola Peninsula
        • Khibiny Massif
          • Koashva Mt
Arzamastsev, A., Yakovenchuk, V., Pakhomovsky, Y., & Ivanyuk, G. (2008). The Khibina and Lovozero alkaline massifs: Geology and unique mineralization. In Guidbook for 33rd International Geological Congress Excursion (No. 47, p. 58).
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow; 33 IGC excursion No 47, July 22 – August 2, 2008 Stop 2-2; Kapustin, Y. L., Pudovkina, Z. V., Bykova, A. V., & Lyubomilova, G. V. (1975). Koashvite, a new mineral. International Geology Review, 17(6), 654-660.
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
          • Yukspor Mt
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow; Kapustin, Y. L., Pudovkina, Z. V., & Bykova, T. Y. (1982). Dorfmanite, a new mineral. International Geology Review, 24(1), 111-115.
        • Lovozero Massif
Pekov, I.V. (2000): Lovozero Massif. Moscow, Ocean Pictures Ltd, 480 pp.
Mineral and/or Locality  
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