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

Phillipsite-Na

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

About Phillipsite-NaHide

06848790017271925953352.jpg
William Phillips
Formula:
(Na,K,Ca0.5,Ba0.5)4-7[Al4-7Si12-9O32] · 12H2O
Colour:
White
Lustre:
Vitreous
Hardness:
4 - 5
Crystal System:
Monoclinic
Name:
Named for the Na-dominance of the exchangeable cations in phillipsites.
The original "phillipsite" was named in 1825 by "Armand" Serve-Dieu Abailard Lévy (1795-1841) in honour of William Phillips (10 May 1775, London, England, United Kingdom - 2 April 1828, London, England, United Kingdom), British mineralogist and co-founder of the Geological Society of London.

Unique IdentifiersHide

Mindat ID:
7229
Long-form identifier:
mindat:1:1:7229:4

Similar NamesHide

Phillipsite-CaA valid IMA mineral speciesCa3(Si10Al6)O32 · 12H2O

IMA Classification of Phillipsite-NaHide

Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Na6(Si10Al6)O32·12H2O

Classification of Phillipsite-NaHide

9.GC.10

9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
C : Chains of doubly-connected 4-membered rings

Mineral SymbolsHide

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

Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.

SymbolSourceReference for Standard
Php-NaIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
PhpWhitney & Evans (2010)Whitney, D.L. and Evans, B.W. (2010) Abbreviations for names of rock-forming minerals. American Mineralogist, 95, 185–187 doi:10.2138/am.2010.3371

Physical Properties of Phillipsite-NaHide

Vitreous
Colour:
White
Streak:
White
Hardness:
4 - 5 on Mohs scale

Optical Data of Phillipsite-NaHide

Type:
Biaxial (+/-)
RI values:
nα = 1.483 - 1.505 nβ = 1.484 - 1.511 nγ = 1.486 - 1.514
2V:
Measured: 60° to 90°, Calculated: 70° to 72°
Max. Birefringence:
δ = 0.003 - 0.009
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. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.

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
Interference Figure:
This shows the idealized biaxial acute bisectrix (Bxa) interference figure - the conoscopic view for a grain cut perpendicular to the acute bisectrix, using this mineral's 2V. The two small white dots mark the melatopes - the points where the two optic axes emerge - and are shown only when they fall within the field of view. The coloured bands are isochromatics, and the dark bands are isogyres.

Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Dispersion:
r > v or r < v

Chemistry of Phillipsite-NaHide

Mindat Formula:
(Na,K,Ca0.5,Ba0.5)4-7[Al4-7Si12-9O32] · 12H2O
Element Weights:
Element% weight
O55.647 %
Si26.641 %
Al8.531 %
Na7.269 %
H1.912 %

Calculated from ideal end-member formula.
O
Si
Al
Na
H

Crystallography of Phillipsite-NaHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/m
Setting:
P21/m
Cell Parameters:
a = 9.96 Å, b = 14.21 Å, c = 14.26 Å
β = 90°
Ratio:
a:b:c = 0.701 : 1 : 1.004
Unit Cell V:
2,018.24 ų (Calculated from Unit Cell)
Z:
2
Comment:
Space group ?

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)
0009270Phillipsite-NaSteinfink H (1962) The crystal structure of the zeolite, phillipsite Acta Crystallographica 15 644-6511962pelagic sediments of the Pacific Ocean0293
CIF Raw Data - click here to close

Geological EnvironmentHide

Type Occurrence of Phillipsite-NaHide

Other Language Names for Phillipsite-NaHide

Relationship of Phillipsite-Na to other SpeciesHide

Other Members of Phillipsite Subgroup:
HarmotomeBa2(Si12Al4)O32 · 12H2OMon. 2/m : P21/m
Phillipsite-CaCa3(Si10Al6)O32 · 12H2OMon. 2/m : P21/m
Phillipsite-KK6(Si10Al6)O32 · 12H2OMon. 2/m : P21/m
Forms a series with:

Common AssociatesHide

Associations Based on Photo Data:
31 photos of Phillipsite-Na associated with Chabazite-Na(Na2,K2,Ca,Sr,Mg)2[Al2Si4O12]2 · 12H2O
24 photos of Phillipsite-Na associated with CalciteCaCO3
18 photos of Phillipsite-Na associated with Gmelinite-NaNa4(Si8Al4)O24 · 11H2O
17 photos of Phillipsite-Na associated with Faujasite-Na(Na2,Ca,Mg)3.5[Al7Si17O48] · 32H2O
12 photos of Phillipsite-Na associated with Gonnardite(Na,Ca)2(Si,Al)5O10 · 3H2O
8 photos of Phillipsite-Na associated with SideriteFeCO3
7 photos of Phillipsite-Na associated with AnalcimeNa(AlSi2O6) · H2O
6 photos of Phillipsite-Na associated with MicroclineK(AlSi3O8)
5 photos of Phillipsite-Na associated with Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
5 photos of Phillipsite-Na associated with Mckelveyite GroupA3B3(CO3)6 · 3H2O

Related Minerals - Strunz-mindat GroupingHide

9.GC.Gismondine-SrSr4(Si8Al8O32) · 9H2OOrth. 222 : C2221
9.GC.Garronite-NaNa6(Al6Si10O32) · 8.5H2OMon. 2
9.GC.05'Gismondine-Ba'Ba2Al4Si4O16 · 4-6H2O
9.GC.05Garronite-CaNa2Ca5Al12Si20O64 · 27H2OTet. 42m : I4m2
9.GC.05Gismondine-CaCaAl2Si2O8 · 4H2OMon. 2/m : P21/b
9.GC.05GobbinsiteNa5(Si11Al5)O32 · 11H2OOrth. mmm(2/m2/m2/m) : Pnma
9.GC.05AmiciteK2Na2Al4Si4O16 · 5H2OMon. 2
9.GC.10MartinandresiteBa2(Al4Si12O32) · 10H2OOrth. mmm(2/m2/m2/m) : Pmmn
9.GC.10HarmotomeBa2(Si12Al4)O32 · 12H2OMon. 2/m : P21/m
9.GC.10Phillipsite-CaCa3(Si10Al6)O32 · 12H2OMon. 2/m : P21/m
9.GC.10Phillipsite-KK6(Si10Al6)O32 · 12H2OMon. 2/m : P21/m
9.GC.10Flörkeite(K3Ca2Na)[Al8Si8O32] · 12H2OTric. 1 : P1
9.GC.15MerlinoiteK5Ca2(Si23Al9)O64 · 24H2OOrth. mmm(2/m2/m2/m) : Immm
9.GC.20Mazzite-NaNa8[Al4Si14O36]2 · 30H2OHex. 6/mmm(6/m2/m2/m) : P63/mmc
9.GC.20Mazzite-Mg(Mg,K,Ca)5(Si26Al10)O72 · 28H2OHex. 6/mmm(6/m2/m2/m) : P63/mmc
9.GC.25PerlialiteK9Na(Ca,Sr)[Al2Si4O12]6 · 15H2OHex. 6/mmm(6/m2/m2/m) : P6/mmm
9.GC.30BoggsiteCa8Na3(Si,Al)96O192 · 70H2OOrth. mmm(2/m2/m2/m) : Imma
9.GC.35Paulingite-Ca(Ca,K,Na,Ba, ◻)10 (Si, Al)42O84 · 34H2OIso. m3m(4/m32/m)
9.GC.35Paulingite-K(K2,Ca,Na2,Ba)5[Al10Si35O90] · 45H2OIso. m3m(4/m32/m)
9.GC.35'Paulingite-Na'(Na2,K2,Ca,Ba)5[Al10Si35O90] · 45H2OIso.

Fluorescence of Phillipsite-NaHide

Not fluorescent in UV

Other InformationHide

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 Phillipsite-NaHide

References for Phillipsite-NaHide

Localities for Phillipsite-NaHide

Showing 35 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.
Australia
 
  • New South Wales
    • Buckland Co.
      • Ardglen
England (2000)
    • Northumberland County
      • Kulnura
Judd et al. (2013) +1 other reference
  • Victoria
    • City of Casey
      • Narre Warren North
Birch (1989)
    • City of Whittlesea
      • Bundoora
Birch (1989) +1 other reference
    • City of Yarra
      • Abbotsford
B. Birch chemical analysis +1 other reference
      • Collingwood
        • Clifton Hill
Birch (1989)
      • Fairfield
Birch (1989)
Gatta et al. (2009)
Canada
 
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
Horváth et al. (1990) +1 other reference
France
 
  • Auvergne-Rhône-Alpes
    • Puy-de-Dôme
      • Ambert
        • Brousse
Leconte J. (2015)
Germany
 
  • Rhineland-Palatinate
    • Ahrweiler
      • Brohltal
        • Brenk
Blass et al. (2006)
Hungary
 
  • Nógrád County
Szakáll et al. (2014)
  • Veszprém County
    • Sümeg District
Kónya-MÁFI
    • Tapolca District
KÓNYA (2015)
      • Zalahaláp
Kónya-MÁFI +1 other reference
Italy
 
  • Campania
    • Metropolitan City of Naples
      • Bacoli
Russo M. (2008)
Russo (2008) +1 other reference
  • Sicily
    • Metropolitan City of Catania
      • Aci Castello
Di Franco (1904) +4 other references
Sturiale (1963) +1 other reference
Sicurella et al. (2010)
  • Veneto
    • Vicenza Province
      • Montecchio Maggiore
        • San Pietro
Boscardin et al. (2011)
Passaglia et al. (2009) +1 other reference
Japan
 
  • Niigata Prefecture
Chiba et al (1995)
Portugal
 
  • Madeira
    • Madeira Island
      • Machico
        • Porto da Cruz
Alves (n.d.)
South Africa
 
  • KwaZulu-Natal
    • eThekwini Metropolitan Municipality
      • Durban
        • Umhlatuzana valley
Heron +2 other references
Spain
 
  • Canary Islands
    • Las Palmas Province
      • Fuerteventura
        • Pájara
Erich Keck
      • Lanzarote
        • Yaiza
          • Playa Blanca
Erich keck (personal communication)
    • Santa Cruz de Tenerife Province
      • Tenerife
        • Adeje
          • Torviscas Alto
Analyzed by XRD by Dr. Joan Vinals (Barcelona)
        • Arona
Dill et al. (2023)
        • Santa Cruz de Tenerife
Collection Agustin Agudo Espinosa ...
        • Santiago del Teide
Dill et al. (2023)
USA
 
  • California
    • Kern County
      • Boron
        • Kramer Borate deposit
Tschernich (1992) +1 other reference
    • Los Angeles County
      • Agoura Hills
Fred DeVito collection
  • Nevada
    • Clark County
      • Spring Mountains
        • Goodsprings Mining District
Robert Housley pers.comm.
  • Oregon
    • Lincoln County
      • Agate Beach
Micro Probe Vol. 9 No 3 +1 other reference
 
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 04:04:04 Page updated: August 24, 2026 11:37:28
Go to top of page