Nacaphite
A valid IMA mineral species
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About Nacaphite
Formula:
Na2Ca(PO4)F
Colour:
Colourless
Lustre:
Vitreous
Hardness:
3
Crystal System:
Monoclinic
Name:
Named for its composition, including sodium (NAtrium), CAlcium, and PHosphorus.
Type Locality:
Unique Identifiers
Mindat ID:
2824
Long-form identifier:
mindat:1:1:2824:6
Similar Names
| Nabaphite | A valid IMA mineral species | NaBaPO4 · 9H2O |
IMA Classification of Nacaphite
Approved
Approval year:
1979
First published:
1980
Classification of Nacaphite
8.BO.05
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
O : With only large cations, (OH, etc.):RO4 about 1:1
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
O : With only large cations, (OH, etc.):RO4 about 1:1
41.3.6.1
41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
3 : (AB)3(XO4)Zq
41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
3 : (AB)3(XO4)Zq
22.1.5
22 : Phosphates, Arsenates or Vanadates with other Anions
1 : Phosphates, arsenates or vanadates with fluoride
22 : Phosphates, Arsenates or Vanadates with other Anions
1 : Phosphates, arsenates or vanadates with fluoride
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Ncp | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Nacaphite
Optical Data of Nacaphite
Type:
Biaxial (-)
RI values:
nα = 1.508 nβ = 1.515 nγ = 1.52
2V:
Measured: 80° , Calculated: 80°
Max. Birefringence:
δ = 0.012
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.
Surface Relief:
Moderate
Dispersion:
none
Chemistry of Nacaphite
Mindat Formula:
Na2Ca(PO4)F
Element Weights:
Crystallography of Nacaphite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P121/c1
Cell Parameters:
a = 13.3185(14) Å, b = 7.0964(8) Å, c = 10.6490(11) Å
β = 113.526(1)°
β = 113.526(1)°
Ratio:
a:b:c = 1.877 : 1 : 1.501
Unit Cell V:
922.81 ų
Z:
8
Comment:
pseudo-orthorhombic C-centred (a = 10.65, b = 24.43, c = 7.10)
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0005738 | Nacaphite | Sokolova E V, Hawthorne F C (2001) The crystal chemistry of the [M3_11-14] trimeric structures: From hyperagpaitic complexes to saline lakes The Canadian Mineralogist 39 1275-1294 |  | 2001 | 0 | 293 | |
| 0005594 | Nacaphite | Sokolova E V, Kabalov Y K, Ferraris G, Schneider J, Khomyakov A P (1999) Modular approach in solving the crystal structure of a synthetic dimorph of nacaphite, Na2Ca[PO4]F, from powder-diffraction data The Canadian Mineralogist 37 83-90 | | 1999 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.649 Å | (100) |
| 3.054 Å | (45) |
| 3.049 Å | (40) |
| 2.005 Å | (40) |
| 1.762 Å | (33) |
| 3.51 Å | (24) |
| 1.470 Å | (21) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 35 : Ultra-alkali and agpaitic igneous rocks |
Type Occurrence of Nacaphite
Place of Conservation of Type Material:
Geology Museum, Kola Branch, Academy of Sciences, Apatity, Russia, 5534.
Mining Institute, St. Petersburg, Russia, 1116/2.
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 79854.
The Natural History Museum, London, England, 1994,15.
Mining Institute, St. Petersburg, Russia, 1116/2.
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 79854.
The Natural History Museum, London, England, 1994,15.
Geological Setting of Type Material:
Ijolite-urtite pegmatite in an apatite deposit.
Synonyms of Nacaphite
Other Language Names for Nacaphite
Common Associates
Associations Based on Photo Data:
| 1 photo of Nacaphite associated with Nefedovite | Na5Ca4(PO4)4F |
| 1 photo of Nacaphite associated with Thermonatrite | Na2CO3 · H2O |
Related Minerals - Strunz-mindat Grouping
| 8.BO. | Ariegilatite | BaCa12(SiO4)4(PO4)2F2O |
| 8.BO. | Aravaite | Ba2Ca18(SiO4)6(PO4)3(CO3)F3O |
| 8.BO. | Theuerdankite | Ag3AsO4 |
| 8.BO.10 | Petitjeanite | Bi3(PO4)2O(OH) |
| 8.BO.10 | Schumacherite | Bi3(VO4)2O(OH) |
| 8.BO.10 | Preisingerite | Bi3(AsO4)2O(OH) |
| 8.BO.15 | Hechtsbergite | Bi2(VO4)O(OH) |
| 8.BO.15 | Smrkovecite | Bi2(PO4)O(OH) |
| 8.BO.15 | Atelestite | Bi2(AsO4)O(OH) |
| 8.BO.20 | Sahlinite | Pb14(AsO4)2O9Cl4 |
| 8.BO.20 | Kombatite | Pb14(VO4)2O9Cl4 |
| 8.BO.25 | Heneuite | CaMg5(CO3)(PO4)3(OH) |
| 8.BO.30 | Nefedovite | Na5Ca4(PO4)4F |
| 8.BO.35 | Kuznetsovite | [Hg2]2+Hg2+[AsO4]Cl |
| 8.BO.40 | Artsmithite | [Hg2]2+2Al(PO4)1.74(OH)1.78 |
| 8.BO.45 | Schlegelite | Bi7(AsO4)3(MoO4)2O4 |
| 8.BO.50 | Hereroite | [Pb32(O,◻)21](AsO4)2[(Si,As,V,Mo)O4]2Cl10 |
| 8.BO.50 | Erikjonssonite | (Pb32O21)[(V,Si,Mo,As)O4]4Cl9 |
| 8.BO.55 | Rudabányaite | (Ag2Hg2)(AsO4)Cl |
| 8.BO.60 | Segerstromite | Ca3(As5+O4)2[As3+(OH)3]2 |
| 8.BO.65 | Wiklundite | Pb2(Mn2+,Zn)3(Fe3+,Mn2+)2(Mn2+,Mg)19(As3+O3)2[(Si,As5+)O4]6(OH)18Cl6 |
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.
Internet Links for Nacaphite
mindat.org URL:
https://www.mindat.org/min-2824.html
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Please feel free to link to this page.
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References for Nacaphite
Reference List:
Fleischer, Michael, Chao, George Y., Francis, Carl A., Pabst, and Adolf (1981) New Mineral Names. American Mineralogist, 66 (1-2) 217-220
Sokolova, E. V., Kabalov, Y. K., Ferraris, G., Schneider, J., Khomyakov, A. P. (1999) Modular approach in solving the crystal structure of a synthetic dimorph of nacaphite, Na2Ca[PO4]F, from powder-differaction data. The Canadian Mineralogist, 37 (1) 83-90
Sokolova, E., Hawthorne, F. C. (2001) The crystal chemistry of the [M3ϕ11–14] trimeric structures: from hyperagpaitic complexes to saline lakes. The Canadian Mineralogist, 39 (5). 1275-1294 doi:10.2113/gscanmin.39.5.1275
Localities for Nacaphite
Showing 9 localities.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and 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).
All localities listed without proper references should be considered as questionable.
Russia | |
| Pekov (1998) |
| Arzamastsev et al. (2008) |
| 33 IGC excursion No 47 +2 other references | |
| |
| ... | |
| Pakhomovsky et al. (2014) |
| Pekov (1998) +1 other reference |
| Pavel M. Kartashov (n.d.) |
| Pekov I.V. et al. (2010) |
Quick NavTopAbout NacaphiteUnique IdentifiersSimilar NamesIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Rasvumchorr Mt, Murmansk Oblast, Russia