Vote for your favorite mineral in #MinCup26! - Azurite vs. Smithsonite
It's carbonate-vs-carbonate to kick off Mineral Cup 2026 with copper-rich Azurite against zinc-rich Smithsonite.
Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic TimeExplore Fossils
Minerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral QuizTime Machine
Photo SearchPhoto GalleriesSearch by ColorPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Nastrophite

A valid IMA mineral species
This page is currently not sponsored. Click here to sponsor this page.
Hide all sections | Show all sections

About NastrophiteHide

Formula:
Na(Sr,Ba)PO4 · 9H2O
Colour:
Colorless
Lustre:
Vitreous
Hardness:
2
Specific Gravity:
2.05
Crystal System:
Isometric
Name:
For its essential chemical constituents sodium (latin: NAtrium), STROntium and PHosphate.
The strontium analogue of nabaphite


Unique IdentifiersHide

Mindat ID:
2845
Long-form identifier:
mindat:1:1:2845:1

IMA Classification of NastrophiteHide

Approved
IMA Formula:
NaSr(PO4)(H2O)9
Approval year:
1980
First published:
1981

Classification of NastrophiteHide

8.CJ.15

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
J : With only large cations
40.1.3.1

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
1 : AB(XO4)·xH2O
19.5.8

19 : Phosphates
5 : Phosphates of Sr and Ba

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
NspIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Pronunciation of NastrophiteHide

Pronunciation:
PlayRecorded byCountry
Jolyon RalphUnited Kingdom

Physical Properties of NastrophiteHide

Vitreous
Transparency:
Transparent
Colour:
Colorless
Streak:
White
Hardness:
Tenacity:
Brittle
Fracture:
Conchoidal
Density:
2.05 g/cm3 (Measured)    2.12 g/cm3 (Calculated)

Optical Data of NastrophiteHide

Type:
Isotropic
RI values:
n = 1.502(1)
Surface Relief:
Moderate (negative)
Relative to Canada balsam mounting medium (n ≈ 1.537).

This shows the grain boundary and Becke line effect under plane-polarised light, based on the contrast between this mineral's average refractive index and the mounting medium. It does not take into account mineral colouration.
In focus

Chemistry of NastrophiteHide

Mindat Formula:
Na(Sr,Ba)PO4 · 9H2O
Element Weights:
Element% weight
O56.563 %
Sr23.828 %
P8.423 %
Na6.252 %
H4.934 %

Calculated from ideal end-member formula.
O
Sr
P
Na
H

Crystallography of NastrophiteHide

Crystal System:
Isometric
Class (H-M):
23 - Tetartoidal
Space Group:
P213
Cell Parameters:
a = 10.559 Å
Unit Cell V:
1,177.25 ų (Calculated from Unit Cell)
Z:
4

Crystal StructureHide

Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File    Best | x | y | z | a | b | c
Rotation
Stop | Start
Labels
Console Off | On | Grey | Yellow
IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0015610NastrophiteBaturin S V, Malinovskii Y A, Belov N V (1981) The crystal structure of nastrophite Na(Sr,Ba)[PO4]*9H2O Soviet Physics Doklady 26 1023-102619810293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
5.21 Å(80)
4.67 Å(90)
3.69 Å(40)
3.49 Å(50)
3.16 Å(30)
2.54 Å(100)
1.953 Å(50)
1.918 Å(40)
1.804 Å(30)
1.728 Å(30)
1.626 Å(30)
1.371 Å(30)
Comments:
Khomyakov et al. 1981.

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Near-surface Processes
23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47)
Stage 4b: Highly evolved igneous rocks>3.0
35 : Ultra-alkali and agpaitic igneous rocks

Type Occurrence of NastrophiteHide

General Appearance of Type Material:
Crystals, mostly 0.2-0.5 but up to 2-3 mm and as deposits of irregular form up to 1 cm in diameter.
Place of Conservation of Type Material:
Geology Museum, Kola Branch, Academy of Sciences, Apatity, 5529; Mining Institute, St. Petersburg, 1194/1–2; A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 81405; The Natural History Museum, London, England, 1994,16.
Geological Setting of Type Material:
Veinlets cutting nepheline syenites.
Associated Minerals at Type Locality:

Synonyms of NastrophiteHide

Other Language Names for NastrophiteHide

German:Nastrophit
Simplified Chinese:水磷钠锶石
Spanish:Nastrophita
Traditional Chinese:水磷鈉鍶石

Common AssociatesHide

Associations Based on Photo Data:
1 photo of Nastrophite associated with DolomiteCaMg(CO3)2

Related Minerals - Strunz-mindat GroupingHide

8.CJ.AirditeSr(V4+O)2(PO4)2 · 4H2OMon. m : Bb
8.CJ.DobšináiteCa2Ca(AsO4)2 · 2H2OMon. 2/m : P21/b
8.CJ.SainfelditeCa5(AsO4)2(AsO3OH)2 · 4H2OMon. 2/m : B2/b
8.CJ.CaesiumpharmacosideriteCsFe3+4[(AsO4)3(OH)4] · 4H2OIso. 43m : P43m
8.CJ.JeankempiteCa5(AsO4)2(HAsO4)2 · 7H2OTric. 1 : P1
8.CJ.05Stercorite(NH4)Na(PO3OH) · 4H2OTric. 1 : P1
8.CJ.10Swaknoite(NH4)2Ca(PO3OH)2 · H2OOrth.
8.CJ.10Mundrabillaite(NH4)2Ca(PO3OH)2 · H2OMon. m : Pm
8.CJ.15NabaphiteNaBaPO4 · 9H2OIso. 23 : P213
8.CJ.20HaidingeriteCaHAsO4 · H2OOrth. mmm(2/m2/m2/m) : Pbcn
8.CJ.25Rhabdophane-(Y)YPO4 · H2OHex. 622 : P6222
8.CJ.25VladimiriteCa4(AsO4)2(AsO3OH) · 4H2OMon. 2/m : P21/b
8.CJ.27'Churchite-(Dy)'(Dy,Sm,Gd,Nd)PO4 · 2H2OMon.
8.CJ.30FerrarisiteCa5(AsO4)2(HAsO4)2 · 9H2OTric. 1 : P1
8.CJ.35FulbrightiteCa(V4+O)2(As5+O4)2 · 4H2OTric. 1 : P1
8.CJ.35Machatschkiite(Ca,Na)6(AsO4)(HAsO4)3(PO4,SO4) · 15H2OTrig. 3m : R3c
8.CJ.40RauenthaliteCa3(AsO4)2 · 10H2OTric. 1 : P1
8.CJ.40PhaunouxiteCa3(AsO4)2 · 11H2OTric.
8.CJ.45Brockite(Ca,Th,Ce)PO4 · H2OHex. 622 : P6222
8.CJ.45Smirnovskite(Th,Ca)PO4 · nH2OHex. 622 : P6222
8.CJ.45Rhabdophane-(Ce)Ce(PO4) · 0.6H2OTrig. 32 : P3121
8.CJ.45Rhabdophane-(La)La(PO4) · H2OHex. 622 : P6222
8.CJ.45Rhabdophane-(Nd)Nd(PO4) · H2OHex. 622 : P6222
8.CJ.45Tristramite(Ca,U4+,Fe3+)(PO4,SO4) · 2H2OHex. 622 : P6222
8.CJ.45Grayite(Th,Pb,Ca)(PO4) · H2OHex. 622 : P6222
8.CJ.45ŠtěpiteU(AsO3OH)2 · 4H2O Tet. 4/mmm(4/m2/m2/m) : I41/acd
8.CJ.47VysokýiteU4+[AsO2(OH)2]4 · 4H2OTric. 1 : P1
8.CJ.50Churchite-(Y)Y(PO4) · 2H2OMon. 2/m : B2/b
8.CJ.50BrushiteCa(PO3OH) · 2H2OMon. m : Bb
8.CJ.50ArdealiteCa2(PO3OH)(SO4) · 4H2OMon. m : Bb
8.CJ.50PharmacoliteCa(HAsO4) · 2H2OMon. m
8.CJ.50'Churchite-(Nd)'Nd(PO4) · 2H2OMon.
8.CJ.55McneariteNaCa5(AsO4)(HAsO4)4 · 4H2OTric.
8.CJ.60DorfmaniteNa2(PO3OH) · 2H2OOrth. mmm(2/m2/m2/m) : Pbca
8.CJ.65SincositeCa(V4+O)2(PO4)2 · 4H2OTet. 4/mmm(4/m2/m2/m) : P42/nnm
8.CJ.65BariosincositeBa(V4+O)2(PO4)2 · 4H2OTet.
8.CJ.70CatalanoiteNa2(PO3OH) · 8H2OOrth. mmm(2/m2/m2/m) : Ibca
8.CJ.75GuériniteCa6(HAsO4)3(AsO4)2 · 10.5H2OMon. 2/m : P21/b
8.CJ.85Ningyoite(U,Ca,Ce)2(PO4)2 · 1-2H2OOrth.

Other InformationHide

IR Spectrum:
IR spectrum shows bands for the phosphate group and H2O.
Thermal Behaviour:
The DTA curve shows a sharp endothermic break at about 150°C.
Notes:
The mineral dissolves completely in cold 1% HCl. It is partly decomposed by hot water, giving a solution alkaline to phenolphthalein. It partially dehydrates under natural conditions.
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 NastrophiteHide

References for NastrophiteHide

Localities for NastrophiteHide

Showing 7 localities.

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.
Hide all sections | Show all sections

Locality ListHide

- 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). 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Czech Republic
 
  • Vysočina Region
    • Žďár nad Sázavou District
      • Rožná
Cempírek +2 other references
Russia
 
  • Murmansk Oblast
    • Kovdorsky District
      • Kovdor Massif
Mandarino (2001) +1 other reference
Pekov et al. (2004)
    • Lovozersky District
Khomyakov +6 other references
        • Umbozero mine
Pavel M. Kartashov (n.d.)
Pavel M. Kartashov (n.d.)
Khomyakov +5 other references
 
and/or  
Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: September 1, 2026 03:20:20 Page updated: August 23, 2026 01:07:53
Go to top of page