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Natrophilite

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About NatrophiliteHide

Formula:
NaMn2+PO4
Colour:
Deep yellow to light yellow
Lustre:
Sub-Vitreous, Greasy
Hardness:
4½ - 5
Specific Gravity:
3.41
Crystal System:
Orthorhombic
Name:
Named by George Brush and Edward Dana in 1890 from NATRium (Latin for sodium) and the Greek φίλος = "a friend" in allusion to its composition containing significant sodium.
Isostructural with:

Classification of NatrophiliteHide

Approved, 'Grandfathered' (first described prior to 1959)
8.AB.10

8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
B : With medium-sized cations
Dana 7th ed.:
38.1.1.3
38.1.1.3

38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
1 : ABXO4
19.12.3

19 : Phosphates
12 : Phosphates of Mn

Physical Properties of NatrophiliteHide

Sub-Vitreous, Greasy
Transparency:
Transparent, Translucent
Comment:
Bright; somewhat pearly on the {001} cleavage.
Colour:
Deep yellow to light yellow
Streak:
White
Hardness:
4½ - 5 on Mohs scale
Tenacity:
Brittle
Cleavage:
Distinct/Good
On {001}, good; on {010}, indistinct; on {021} poor.
Fracture:
Irregular/Uneven
Density:
3.41 g/cm3 (Measured)    3.47 g/cm3 (Calculated)

Optical Data of NatrophiliteHide

Type:
Biaxial (+)
RI values:
nα = 1.671 nβ = 1.674 nγ = 1.684
2V:
Measured: 70° to 80°, Calculated: 58°
Birefringence:
0.013
Max Birefringence:
δ = 0.013
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
r < v, relatively strong
Optical Extinction:
XYZ = abc
Pleochroism:
Non-pleochroic

Chemical Properties of NatrophiliteHide

Formula:
NaMn2+PO4
IMA Formula:
NaMn2+(PO4)

Crystallography of NatrophiliteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pmna
Setting:
Pmna
Cell Parameters:
a = 6.31 Å, b = 10.517 Å, c = 4.98 Å
Ratio:
a:b:c = 0.6 : 1 : 0.474
Unit Cell V:
330.48 ų (Calculated from Unit Cell)
Morphology:
Crystals unknown; usually as small (1 mm) grains of as thin fracture (1 mm wide) fillings.
Comment:
Incomplete structure analysis, Am Min (1972) 57:1333

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.50 (60)
4.05 (60)
3.66 (50)
3.15 (50)
2.86 (80)
2.60 (100)
2.58 (100)
1.831 (70)
Comments:
ICDD 25-846, Pmnb

Type Occurrence of NatrophiliteHide

Other Language Names for NatrophiliteHide

Relationship of Natrophilite to other SpeciesHide

Other Members of this group:
FerrisickleriteLi1-x(Fe3+xFe2+1-x)PO4Orth.
KarenwebberiteNa(Fe2+,Mn2+)PO4Orth. mmm (2/m 2/m 2/m) : Pnma
LithiophiliteLiMn2+PO4Orth. mmm (2/m 2/m 2/m) : Pmna
Purpurite(Mn3+,Fe3+)PO4Orth. mmm (2/m 2/m 2/m) : Pmna
SickleriteLi1-x(Mn3+xMn2+1-x)PO4Orth.
TriphyliteLiFe2+PO4Orth. mmm (2/m 2/m 2/m) : Pmna

Common AssociatesHide

Associated Minerals Based on Photo Data:
Lithiophilite4 photos of Natrophilite associated with Lithiophilite on mindat.org.
Eosphorite1 photo of Natrophilite associated with Eosphorite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

8.AB.BorisenkoiteCu3[(V,As)O4]2Mon. 2/m : P21/b
8.AB.05FarringtoniteMg3(PO4)2Mon. 2/m
8.AB.10FerrisickleriteLi1-x(Fe3+xFe2+1-x)PO4Orth.
8.AB.10Heterosite(Fe3+,Mn3+)PO4Orth. mmm (2/m 2/m 2/m) : Pmna
8.AB.10LithiophiliteLiMn2+PO4Orth. mmm (2/m 2/m 2/m) : Pmna
8.AB.10Purpurite(Mn3+,Fe3+)PO4Orth. mmm (2/m 2/m 2/m) : Pmna
8.AB.10SickleriteLi1-x(Mn3+xMn2+1-x)PO4Orth.
8.AB.10SimferiteLi(Mg,Fe3+,Mn3+)2(PO4)2Orth.
8.AB.10TriphyliteLiFe2+PO4Orth. mmm (2/m 2/m 2/m) : Pmna
8.AB.10KarenwebberiteNa(Fe2+,Mn2+)PO4Orth. mmm (2/m 2/m 2/m) : Pnma
8.AB.15Sarcopside(Fe2+,Mn2+,Mg)3(PO4)2Mon. 2/m : P21/b
8.AB.15Chopinite(Mg,Fe2+)3(PO4)2Mon. 2/m : P21/b
8.AB.20BeusiteMn2+Mn2+2 (PO4)2Mon.
8.AB.20GraftoniteFe2+Fe2+2(PO4)2Mon. 2/m : P21/b
8.AB.25XanthiositeNi3(AsO4)2Mon. 2/m : P21/b
8.AB.30LammeriteCu3(AsO4)2Mon.
8.AB.30Lammerite-βCu3(AsO4)2Mon. 2/m : P21/b
8.AB.35McbirneyiteCu3(VO4)2Tric.
8.AB.35StranskiiteZn2Cu(AsO4)2Tric. 1 : P1
8.AB.35PseudolyonsiteCu3(VO4)2Mon. 2/m : P21/b
8.AB.40LyonsiteCu3Fe4(VO4)6Orth.

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

38.1.1.1TriphyliteLiFe2+PO4Orth. mmm (2/m 2/m 2/m) : Pmna
38.1.1.2LithiophiliteLiMn2+PO4Orth. mmm (2/m 2/m 2/m) : Pmna
38.1.1.4KarenwebberiteNa(Fe2+,Mn2+)PO4Orth. mmm (2/m 2/m 2/m) : Pnma

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

19.12.1MetaswitzeriteMn2+3(PO4)2 · 4H2OMon. 2/m : P2/b
19.12.2BermaniteMn2+Mn3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P2/b
19.12.4SidorenkiteNa3Mn2+(CO3)(PO4)Mon.
19.12.5Niahite(NH4)(Mn2+,Mg)(PO4) · H2OOrth. mm2 : Pmn21
19.12.6RobertsiteCa2Mn3+3(PO4)3O2 · 3H2OMon. m : Bb
19.12.7PararobertsiteCa2Mn3+3(PO4)3O2 · 3H2OMon. 2/m : P21/b
19.12.8SinkankasiteMn2+Al(PO3OH)2(OH) · 6H2OTric.
19.12.9MangangordoniteMn2+Al2(PO4)2(OH)2 · 8H2OTric.
19.12.10Heterosite(Fe3+,Mn3+)PO4Orth. mmm (2/m 2/m 2/m) : Pmna
19.12.11Purpurite(Mn3+,Fe3+)PO4Orth. mmm (2/m 2/m 2/m) : Pmna
19.12.12Wolfeite(Fe2+,Mn2+)2(PO4)(OH)Mon. 2/m : P21/b
19.12.13Triploidite(Mn2+,Fe2+)2(PO4)(OH)Mon. 2/m : P2/b
19.12.14LipscombiteFe2+Fe3+2(PO4)2(OH)2Tet.
19.12.15FrondeliteMn2+Fe3+4(PO4)3(OH)5Orth. 2 2 2 : C2 2 21
19.12.16RockbridgeiteFe2+Fe3+4(PO4)3(OH)5Orth. mmm (2/m 2/m 2/m)
19.12.17Kryzhanovskite(Fe3+,Mn2+)3(PO4)2(OH,H2O)3Orth.
19.12.18LandesiteMn2+3-xFe3+x(PO4)2(OH)x · (3-x)H2OOrth.
19.12.19Phosphoferrite(Fe2+,Mn2+)3(PO4)2 · 3H2OOrth. mmm (2/m 2/m 2/m) : Pmna
19.12.20Reddingite(Mn2+,Fe2+)3(PO4)2 · 3H2OOrth. mmm (2/m 2/m 2/m) : Pmna
19.12.21EarlshannoniteMn2+Fe3+2(PO4)2(OH)2 · 4H2OMon.
19.12.22Hureaulite(Mn,Fe)5(PO4)2(HPO4)2 · 4H2OMon. 2/m : B2/b
19.12.23Switzerite(Mn,Fe)3(PO4)2 · 7H2OMon.
19.12.24LaueiteMn2+Fe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
19.12.25PseudolaueiteMn2+Fe3+2(PO4)2(OH)2 · 8H2OMon. 2/m : P21/b
19.12.26StrunziteMn2+Fe3+2(PO4)2(OH)2 · 6H2OTric. 1 : P1
19.12.27StewartiteMn2+Fe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
19.12.28Alluaudite(Na,Ca)Mn2+(Fe3+,Mn2+,Fe2+,Mg)2(PO4)3Mon.
19.12.29Ferroalluaudite(Na,Ca)Fe2+(Fe3+,Mn2+,Fe2+)2(PO4)3
19.12.30Fillowite{Mn2+}{Na8}{Ca4Na4}{(Mn2+,Fe2+)43}(PO4)36Trig. 3 : R3
19.12.31JohnsomervilleiteNa10Ca6Mg18Fe25(PO4)36Trig.
19.12.32WicksiteNaCa2(Fe2+,Mn2+)4MgFe3+(PO4)6 · 2H2OOrth. mmm (2/m 2/m 2/m)
19.12.33Dickinsonite-(KMnNa){KNa}{Mn2+◻}{Ca}{Na3}{Mn2+13}{Al}(PO4)12(OH)2Mon. 2/m : B2/b
19.12.34Sarcopside(Fe2+,Mn2+,Mg)3(PO4)2Mon. 2/m : P21/b
19.12.35LudlamiteFe2+3(PO4)2 · 4H2OMon. 2/m : P21/b
19.12.36GraftoniteFe2+Fe2+2(PO4)2Mon. 2/m : P21/b
19.12.37WilhelmvierlingiteCaMnFe3+(PO4)2(OH) · 2H2OOrth.
19.12.38FairfielditeCa2Mn2+(PO4)2 · 2H2OTric. 1 : P1
19.12.39BeusiteMn2+Mn2+2 (PO4)2Mon.
19.12.40MesseliteCa2Fe2+(PO4)2 · 2H2OTric. 1 : P1
19.12.41Jahnsite-(CaMnFe){Ca}{Mn2+}{Fe2+2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
19.12.42Jahnsite-(CaMnMn){Ca}{Mn2+}{Mn2+2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
19.12.43Jahnsite-(CaMnMg){Ca}{Mn2+}{(Mg,Fe2+)2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
19.12.44KeckiteCaMn2+(Fe3+Mn2+)Fe3+2(PO4)4(OH)3 · 7H2OMon. 2/m : P2/b
19.12.45StanfielditeCa4Mg5(PO4)6Mon.
19.12.46Laubmannite(Fe2+,Mn2+,Ca)3Fe3+6(PO4)4(OH)12
19.12.47ZodaciteCa4Mn2+Fe3+4(PO4)6(OH)4 · 12H2OMon.
19.12.48HagendorfiteNaCaMn2+Fe2+2(PO4)3Mon. 2/m : B2/b
19.12.49Maghagendorfite(□,Na,)(Na,Ca,Fe2+)Mn(Mg,Fe2+,Fe3+)3(PO4)3Mon.
19.12.50VaruliteNaCaMn2+Mn2+2(PO4)3Mon. 2/m : B2/b
19.12.51GriphiteNa4Li2Ca6(Mn2+,Fe2+,Mg)19Al8(PO4)24(F,OH)8Iso. m3 (2/m 3)
19.12.52Attakolite(Ca,Sr)Mn(Al,Fe)4(HPO4,PO4)3(SiO4,PO4)(OH)4Mon. 2/m : B2/m
19.12.53Arrojadite-(KFe){KNa}{Fe2+◻}{Ca}{Na2◻}{Fe2+13}{Al}(PO4)11(HPO4)(OH)2Mon.
19.12.54Lun'okite(Mn,Ca)(Mg,Fe,Mn)Al(PO4)2OH · 4H2OOrth. mmm (2/m 2/m 2/m) : Pbca
19.12.55EosphoriteMn2+Al(PO4)(OH)2 · H2OOrth. mmm (2/m 2/m 2/m) : Cmca
19.12.56Ernstite(Mn2+,Fe3+)Al(PO4)(OH,O)2 · H2OMon.
19.12.57ChildreniteFe2+Al(PO4)(OH)2 · H2OOrth. mm2 : Ccc2
19.12.58BobfergusoniteNa2Mn5FeAl(PO4)6Mon. 2/m : P2/b
19.12.59QingheiiteNaMn3+Mg(Al,Fe3+)(PO4)3Mon. 2/m : P21/b
19.12.60Whiteite-(CaFeMg){Ca}{(Fe2+,Mn2+)}{Mg2}{Al2}(PO4)4(OH)2 · 8H2OMon. 2/m : P21/b
19.12.61Whiteite-(CaMnMg){Ca}{Mn2+}{Mg2}{Al2}(PO4)4(OH)2 · 8H2OMon. 2/m
19.12.62Whiteite-(MnFeMg){(Mn2+,Ca)}{(Fe2+,Mn2+)}{Mg2}{Al2}(PO4)4(OH)2 · 8H2OMon. 2/m : P21/b
19.12.63Rittmannite{(Mn2+,Ca)}{Mn2+}{(Fe2+,Mn2+,Mg)2}{(Al,Fe3+)2}(PO4)4(OH)2 · 8H2OMon.
19.12.64ZanazziiteCa2Mg5Be4(PO4)6(OH)4 · 6H2OMon. 2/m : B2/b
19.12.65Samuelsonite(Ca,Ba)Ca8Fe2+2Mn2+2Al2(PO4)10(OH)2Mon. 2/m : B2/m

Fluorescence of NatrophiliteHide

Not fluorescent.

Other InformationHide

Notes:
Soluble in acids.
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 NatrophiliteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Brush and Dana (1890) American Journal of Science: 39: 205.
Larsen, E.S. (1921) The Microscopic Determination of the Nonopaque Minerals, First edition, USGS Bulletin 679: 115.
Byström (1943) Arkiv för Kemi, Mineralogi och Geologi, Stockholm: 17B, no. 4.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 670-671.
Am Min 50:1096-1097
American Mineralogist (1972): 57: 1333-1344.

Internet Links for NatrophiliteHide

Localities for NatrophiliteHide

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.
Germany
 
  • Saxony
    • Erzgebirge
      • Ehrenfriedersdorf
Thomas, R., and Webster, J.D. (2000): Mineralium Deposita 35, 570-582.
Poland
 
  • Lower Silesia (Dolnośląskie)
    • Ząbkowice Slaskie District
      • Ząbkowice (Frankenstein)
        • Szklary (Gläsendorf)
Pieczka, A., Włodek, A., Gołębiowska, B., Szełęg, E., Szuszkiewicz, A., Ilnicki, S., Nejbert, K., Turniak, K. (2015): Phosphate-bearing pegmatites in the Góry Sowie Block and adjacent areas, Sudetes, SW Poland. 7th International Symposium on Granitic Pegmatites, PEG 2015 Książ, Poland. Abstracts: 77-78; Pieczka, A., Evans, R. J., Grew, E. S., Groat, L. A., Ma, C., & Rossman, G. R. (2013). The dumortierite supergroup. II. Three new minerals from the Szklary pegmatite, SW Poland: Nioboholtite,(Nb0. 6⃞0. 4) Al6BSi3O18, titanoholtite,(Ti0. 75⃞0. 25) Al6BSi3O18, and szklaryite, ⃞Al6BAs33+ O15. Mineralogical Magazine, 77(6), 2841-2856.
USA (TL)
 
  • Connecticut
    • Fairfield Co.
      • Redding (Reading)
        • Branchville
Brush and Dana (1890); Shainin (1946): American Mineralogist 31: 329-345; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 671.; Am Min 50:1096-1097; Rocks & Minerals (1995) 70:396-409
    • Middlesex Co.
      • Portland
        • Collins Hill
          • Strickland pegmatite (Strickland-Cramer Quarry; Strickland-Cramer Mine; Strickland-Cramer Feldspar-Mica Quarries)
Harold Moritz collection
  • Wisconsin
    • Florence Co.
      • Fern
        • Pine River pegmatites
Al Falster
Mineral and/or Locality  
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