Help|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on MindatThe Mindat Store
Minerals by PropertiesMinerals by ChemistryRandom MineralSearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery


This page is currently not sponsored. Click here to sponsor this page.
(Na,Ca,K)6-7[Al8Si28O72] · nH2O
White, colourless, red, ...
Vitreous, Pearly
3½ - 4
Member of:
Named in 1797 by Jean Claude de la Métherie from Greek στιλβη "stilbein", to glitter of shine, or "stilbe", a mirror, alluding to its pearly or vitreous luster. Originally, but inconsistently called zeolite in 1756 by Axel Cronstedt. Named crystalii ad centrum tendentes in 1758 by Cronstedt. In 1772, Johan Gottschalk Wallerius called this mineral zeolite selenitica lamellaris. Also in 1797, de la Métherie called this mineral zeolite nacrée. Werner (1780) called this mineral strehliger zeolith. Rene Just Haüy (1801) used the term stilbite anamorphique for a mineral now recognized as heulandite. Desmine was introduced in 1818 by Johann Friedrich August Breithaupt. Sphaerostilbite was used in 1832 by François Sulpice Beudant. Additional varietal names and synonyms have been proposed: blättricher zeolit, hypostilbite, puflerite, radiated zeolite, and syhedrite. Chemical suffixes were added by the IMA.
Zeolite Group.

Note: In spite of the high Na content, the monoclinic C2/m symmetry of stilbite is retained, in contrast to the otherwise similar stellerite which is orthorhombic.

Classification of Stilbite-Na


9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
E : Chains of T10O20 Tetrahedra
Dana 7th ed.:

Physical Properties of Stilbite-Na

Vitreous, Pearly
Diaphaneity (Transparency):
Transparent, Translucent
White, colourless, red, light yellow, light to dark brown, cream
Hardness (Mohs):
3½ - 4
Perfect on the {010}
2.1 - 2.2 g/cm3 (Measured)    2.2 g/cm3 (Calculated)

Optical Data of Stilbite-Na

Biaxial (-)
RI values:
nα = 1.479 - 1.492 nβ = 1.485 - 1.500 nγ = 1.489 - 1.505
Measured: 22° to 79°, Calculated: 76° to 78°
Max Birefringence:
δ = 0.010 - 0.013
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:

Chemical Properties of Stilbite-Na

(Na,Ca,K)6-7[Al8Si28O72] · nH2O
IMA Formula:
Na9(Si27Al9)O72 · 28H2O
Elements listed in formula:

Crystallography of Stilbite-Na

Crystal System:
Class (H-M):
2/m - Prismatic
Space Group:
Cell Parameters:
a = 13.63 Å, b = 18.17 Å, c = 11.31 Å
β = 129.166°
a:b:c = 0.75 : 1 : 0.622
Unit Cell Volume:
V 2 ų

Type Occurrence of Stilbite-Na

Relationship of Stilbite-Na to other Species

Member of:
Other Members of Group:
AlflarseniteNaCa2Be3Si4O13(OH) · 2H2O
AmiciteK2Na2Al4Si4O16 · 5H2O
AnalcimeNa(AlSi2O6) · H2O
Barrerite(Na,K,Ca0.5)2[Al2Si7O18] · 7H2O
Bellbergite(K,Ba,Sr)2Sr2Ca2(Ca,Na)4[Al3Si3O12]6 · 30H2O
BikitaiteLiAlSi2O6 · H2O
BoggsiteCa8Na3(Si,Al)96O192 · 70H2O
Brewsterite-Ba(Ba,Sr)[Al2Si6O16] · 5H2O
Brewsterite-Sr(Sr,Ba,Ca)[Al2Si6O16] · 5H2O
Chabazite-Levyne SubgroupA subgroup of the Zeolite Group.
ChiavenniteCaMnBe2Si5O13(OH)2 · 2H2O
ClinoptiloliteNote on the distinguishing differences between clinoptilolite and heulandite (hhttp://rruff.
CowlesiteCaAl2Si3O10 · 6H2O
Dachiardite-Ca(Ca,Na2,K2)5Al10Si38O96 · 25H2O
Dachiardite-Na(Na2,Ca,K2)5Al10Si38O96 · 25H2O
DirenzoiteNaK6MgCa2(Al13Si47O120) · 36H2O
EdingtoniteBa[Al2Si3O10] · 4H2O
EpistilbiteCaAl2Si6O16 · 5H2O
ErioniteThis name now refers to a group of related minerals.
Faujasite SubgroupA subgroup of the Zeolite Group.
FerrieriteZeolite Group.
FerrochiavenniteCa1-2Fe[(Si,Al,Be)5Be2O13(OH)2] · 2H2O
Flörkeite(K3Ca2Na)[Al8Si8O32] · 12H2O
Garronite-CaNa2Ca5Al12Si20O64 · 27H2O
GaultiteNa4Zn2Si7O18 · 5H2O
Gismondine-BaBa2Al4Si4O16 · 4-6H2O
Gismondine-CaCaAl2Si2O8 · 4H2O
GmeliniteIn 1997, gmelinite was split into Gmelinite-Ca, Gmelinite-Na and Gmelinite-K.
GobbinsiteNa5(Si11Al5)O32 · 11H2O
GoosecreekiteCa[Al2Si6O16] · 5H2O
GottardiiteNa3Mg3Ca5Al19Si117O272 · 93H2O
Harmotome(Ba0.5,Ca0.5,K,Na)5[Al5Si11O32] · 12H2O
HeulanditeNote on the distinguishing differences between heulandite and clinoptilolite (http://rruff.
LaumontiteCaAl2Si4O12 · 4H2O
LovdariteK2Na6Be4Si14O36 · 9H2O
MaricopaitePb7Ca2(Si,Al)48O100 · 32H2O
Mazzite-Mg(Mg,K,Ca)5(Si26Al10)O72 · 28H2O
Mazzite-NaNa8[Al4Si14O36]2 · 30H2O
Merlinoite(K,Na)5(Ca,Ba)2Al9Si23O64 · 23H2O
Montesommaite(K,Na)9Al9Si23O64 · 10H2O
Mordenite(Na2,Ca,K2)Al2Si10O24 · 7H2O
MutinaiteNa3Ca4Si85Al11O192 · 60H2O
NabesiteNa2BeSi4O10 · 4H2O
Natrolite SubgroupA subgroup of the Zeolite Group.
OffretiteKCaMg(Si13Al5)O36 · 15H2O
PahasapaiteLi8(Ca,Li,K)10.5Be24(PO4)24 · 38H2O
ParthéiteCa2(Si4Al4) O15 (OH)2•4H2O
Paulingite-Ca(Ca,K,Na,Ba,◻)10 (Si, Al)42O84•34H2O
Paulingite-K(K2,Ca,Na2,Ba)5[Al10Si35O90] · 45H2O
Paulingite-Na(Na2,K2,Ca,Ba)5[Al10Si35O90] · 45H2O
PerlialiteK9Na(Ca,Sr)[Al2Si4O12]6 · 15H2O
PhillipsiteZeolite Group.
Pollucite(Cs,Na)2(Al2Si4O12) · 2H2O
RoggianiteCa2Be(OH)2Al2Si4O13 · 2.5H2O
StelleriteCa4(Si28Al8)O72 · 28H2O
Stilbite-CaNaCa4[Al9Si27O72] · nH2O
Terranovaite(Na,Ca)8(Si68Al12)O160 · 29H2O
Thomsonite-CaNaCa2[Al5Si5O20] · 6H2O
Thomsonite-SrNa(Sr,Ca)2[Al5Si5O20] · 7H2O
Tschernichite(Ca,Na2)[Al2Si4O12] · 4-8H2O
TschörtneriteCa4(Ca,Sr,K,Ba)3Cu3[(OH)2|Al3Si3O12]4 · nH2O
WairakiteCa(Al2Si4O12) · 2H2O
WeinebeneiteCaBe3(PO4)2(OH)2 · 4H2O
Wenkite(Ba,K)4(Ca,Na)6[(SO4)3|(Si,Al)20O39(OH)2] · 0.5H2O
WillhendersoniteKCa[Al3Si3O12] · 5H2O
YugawaraliteCaAl2Si6O16 · 4H2O
9.GE.05Heulandite-Ca(Ca,Na)5(Si27Al9)O72 · 26H2O
9.GE.05Heulandite-K(K,Ca,Na)5(Si27Al9)O72 · 26H2O
9.GE.05Heulandite-Na(Na,Ca,K)6(Si,Al)36O72 · 22H2O
9.GE.05Heulandite-Sr(Sr,Na,Ca)5(Si27Al9)O72 · 24H2O
9.GE.05Heulandite-Ba(Ba,Ca,K)5(Si27Al9)O72 · 22H2O
9.GE.10Stilbite-CaNaCa4[Al9Si27O72] · nH2O
9.GE.15Barrerite(Na,K,Ca0.5)2[Al2Si7O18] · 7H2O
9.GE.15StelleriteCa4(Si28Al8)O72 · 28H2O
9.GE.20Brewsterite-Ba(Ba,Sr)[Al2Si6O16] · 5H2O
9.GE.20Brewsterite-Sr(Sr,Ba,Ca)[Al2Si6O16] · 5H2O,Na)5(Si27Al9)O72 · 26H2O,Ca,Na)5(Si27Al9)O72 · 26H2O,Ca,K)6(Si,Al)36O72 · 22H2O,Na,Ca)5(Si27Al9)O72 · 24H2O[Al9Si27O72] · nH2O,K,Ca0.5)2[Al2Si7O18] · 7H2O

Other Names for Stilbite-Na

Name in Other Languages:

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.

References for Stilbite-Na

Reference List:
Slaughter, M. (1970): Crystal structure of stilbite: American Mineralogist: 55: 387-397.

Cruciani, G., G. Artioli, A. Gualtieri, K. Stahl, and J.C. Hanson (1997): Dehydration dynamics of stilbite using synchrotron X-ray powder diffraction: American Mineralogist: 82: 729-739.

Cruciani, G., G. Artioli, A. Gualtieri, Acta Crystallographica: B27: 833-841.

Bulletin de Mineralogie: 101: 368-375.

Mineralogical Magazine (1998): 62: 555.

Internet Links for Stilbite-Na URL:
Please feel free to link to this page.

Localities for Stilbite-Na

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.
(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.
  • South Australia
    • Mt Lofty Ranges
      • South Mt Lofty Ranges (Adelaide Hills)
        • Strathalbyn
South Australian Museum collection
  • Victoria
    • Bass Coast Shire
      • Phillip Island
  • Maharashtra
    • Aurangabad District
      • Bidkin
-various added photos - The reference of Muhammed F. Makki & Sami Makki, "Green apophyllite from Bidkin, Aurangabad, India", Mineralogical Record Vol. 39, No. 4 (July - August) 2008 pp 267-273 does not provide clarification as to the variety of Stilbite from here. I don't believe that there is a confirmed analysis of Stlbite-Na from here (Keith Compton).
  • Piedmont
    • Verbano-Cusio-Ossola Province
      • Omegna
- Albertini,C. (2000) : Ritrovamenti nel Rio Inferno, Brughiere di Omegna. Prima segnalazione nel granito di Baveno : uranofane-beta - Rivista Mineralogica Italiana, Milano, XXIV, 2, 88-92.
      • Ossola Valley
Tony Nikischer
  • Sardinia
    • Cagliari Province
      • Pula
The Canadian Mineralogist Vol. 35, pp. 1571-1606 (1997)
        • Nora
Lapis 2003(2), 21-30
  • Kyushu Region
    • Fukuoka prefecture
      • Munakata
Ueno and Hanada (1982) Koubutsugaku Zasshi, 15, 259-272.
  • Alaska
    • Wrangell-Petersburg Borough
      • Kupreanof Island
The Canadian Mineralogist; June 1997; v. 35; no. 3; p. 691-698
  • Pennsylvania
    • Berks Co.
      • Birdsboro
        • Gickerville (Gibralter)
Rocks & Min.: 21:142-143.
    • Montgomery Co.
      • Marlborough Township
        • Perkiomenville
Rocks & Min.: 10:111; 16:136-137; 17:341; 22: 803-804.
  • Utah
    • Tooele Co.
      • Oquirrh Mts
        • Rush Valley District (Stockton District)
UGMS Bull 117 Minerals and Mineral Localities of Utah
  • Washington
    • King Co.
      • Preston
Minerals of Washington, Bart Cannon, 1975
    • Stevens Co.
      • Spokane Indian Reservation
        • Wellpinit
Cannon, B. (1975): Minerals of Washington, p.53
Mineral and/or Locality is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © and the Hudson Institute of Mineralogy 1993-2017, except where stated. relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: July 26, 2017 05:31:24 Page generated: July 18, 2017 21:14:05
Go to top of page