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David Brewster
(Ba,Sr)[Al2Si6O16] · 5H2O
White, Colorless, Pale Pink
Specific Gravity:
Crystal System:
Member of:
Named after David Brewster (1781-1868), Scottish physicist, who studied the optical properties of minerals and the element Strontium. The Ba-dominant member of the Brewsterite series.
Zeolite Group. The barium analogue of Brewsterite-Sr.

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Classification of Brewsterite-BaHide


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

Physical Properties of Brewsterite-BaHide

White, Colorless, Pale Pink
2.453 g/cm3 (Measured)    2.5 g/cm3 (Calculated)

Optical Data of Brewsterite-BaHide

Biaxial (+)
RI values:
nα = 1.510 - 1.514 nβ = 1.512 - 1.516 nγ = 1.523 - 1.528
Measured: 44° to 45°, Calculated: 46° to 48°
Max Birefringence:
δ = 0.013 - 0.014
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:

Chemical Properties of Brewsterite-BaHide

(Ba,Sr)[Al2Si6O16] · 5H2O
IMA Formula:
Ba(Al2Si6)O16 · 5H2O

Crystallography of Brewsterite-BaHide

Crystal System:
Class (H-M):
2/m - Prismatic
Space Group:

Type Occurrence of Brewsterite-BaHide

Synonyms of Brewsterite-BaHide

Other Language Names for Brewsterite-BaHide

Relationship of Brewsterite-Ba to other SpeciesHide

Member of:
Other Members of this group:
AlflarseniteNaCa2Be3Si4O13(OH) · 2H2OMon. 2 : P21
AmiciteK2Na2Al4Si4O16 · 5H2OMon. 2
AnalcimeNa(AlSi2O6) · H2OTric.
Barrerite(Na,K,Ca0.5)2[Al2Si7O18] · 7H2OOrth. mmm (2/m 2/m 2/m)
Bellbergite(K,Ba,Sr)2Sr2Ca2(Ca,Na)4[Al3Si3O12]6 · 30H2OHex.
BikitaiteLiAlSi2O6 · H2OTric. 1 : P1
BoggsiteCa8Na3(Si,Al)96O192 · 70H2OOrth. mmm (2/m 2/m 2/m) : Imma
Brewsterite-Sr(Sr,Ba,Ca)[Al2Si6O16] · 5H2O
Chabazite-Levyne SubgroupA subgroup of the Zeolite Group.
ChiavenniteCaMnBe2Si5O13(OH)2 · 2H2OMon. 2/m : P21/b
ClinoptiloliteNote on the distinguishing differences between clinoptilolite and heulandite (hhttp://rruff.
CowlesiteCaAl2Si3O10 · 6H2OOrth.
Dachiardite-Ca(Ca,Na2,K2)5Al10Si38O96 · 25H2OMon.
Dachiardite-Na(Na2,Ca,K2)5Al10Si38O96 · 25H2OMon.
DirenzoiteNaK6MgCa2(Al13Si47O120) · 36H2OOrth. mmm (2/m 2/m 2/m) : Pmmn
EdingtoniteBa[Al2Si3O10] · 4H2O
EpistilbiteCaAl2Si6O16 · 5H2OMon.
ErioniteThis name now refers to a group of related minerals.
FaujasiteA subgroup of the Zeolite Group.
FerrieriteZeolite Group.
FerrochiavenniteCa1-2Fe[(Si,Al,Be)5Be2O13(OH)2] · 2H2OMon. 2/m : P21/b
Flörkeite(K3Ca2Na)[Al8Si8O32] · 12H2OTric. 1 : P1
Garronite-CaNa2Ca5Al12Si20O64 · 27H2OTet. 4 2m : I4m2
GaultiteNa4Zn2Si7O18 · 5H2OOrth. mm2 : Fdd2
Gismondine-BaBa2Al4Si4O16 · 4-6H2O
Gismondine-CaCaAl2Si2O8 · 4H2O
GmeliniteIn 1997, gmelinite was split into Gmelinite-Ca, Gmelinite-Na and Gmelinite-K.
GobbinsiteNa5(Si11Al5)O32 · 11H2OOrth.
GoosecreekiteCa[Al2Si6O16] · 5H2OMon.
GottardiiteNa3Mg3Ca5Al19Si117O272 · 93H2OOrth.
Harmotome(Ba0.5,Ca0.5,K,Na)5[Al5Si11O32] · 12H2OMon. 2/m : P21/m
HeulanditeNote on the distinguishing differences between heulandite and clinoptilolite (http://rruff.
KirchhoffiteCs(BSi2O6)Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
LaumontiteCaAl2Si4O12 · 4H2OMon. 2/m : B2/m
LovdariteK2Na6Be4Si14O36 · 9H2OOrth. mm2
MaricopaitePb7Ca2(Si,Al)48O100 · 32H2OOrth.
Mazzite-Mg(Mg,K,Ca)5(Si26Al10)O72 · 28H2OHex.
Mazzite-NaNa8[Al4Si14O36]2 · 30H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
Merlinoite(K,Na)5(Ca,Ba)2Al9Si23O64 · 23H2OOrth.
Montesommaite(K,Na)9Al9Si23O64 · 10H2OOrth.
Mordenite(Na2,Ca,K2)Al2Si10O24 · 7H2OOrth.
MutinaiteNa3Ca4Si85Al11O192 · 60H2OOrth.
NabesiteNa2BeSi4O10 · 4H2OOrth. 2 2 2 : P21 21 21
Natrolite SubgroupA subgroup of the Zeolite Group.
OffretiteKCaMg(Si13Al5)O36 · 15H2OHex. 6 m2 : P6m2
PahasapaiteLi8(Ca,Li,K)10.5Be24(PO4)24 · 38H2OIso. 2 3 : I2 3
ParthéiteCa2(Si4Al4) O15 (OH)2•4H2OMon. 2/m : B2/b
Paulingite-Ca(Ca,K,Na,Ba,◻)10 (Si, Al)42O84•34H2OIso.
Paulingite-K(K2,Ca,Na2,Ba)5[Al10Si35O90] · 45H2OIso.
Paulingite-Na(Na2,K2,Ca,Ba)5[Al10Si35O90] · 45H2OIso.
PerlialiteK9Na(Ca,Sr)[Al2Si4O12]6 · 15H2OHex.
PhillipsiteZeolite Group.
Pollucite(Cs,Na)2(Al2Si4O12) · 2H2OIso. m3m (4/m 3 2/m) : Ia3d
RoggianiteCa2Be(OH)2Al2Si4O13 · 2.5H2OTet.
StelleriteCa4(Si28Al8)O72 · 28H2OOrth. mmm (2/m 2/m 2/m) : Fmmm
Stilbite-CaNaCa4[Al9Si27O72] · nH2OMon. 2/m : B2/m
Stilbite-Na(Na,Ca,K)6-7[Al8Si28O72] · nH2OMon. 2/m : B2/m
Terranovaite(Na,Ca)8(Si68Al12)O160 · 29H2OOrth.
Thomsonite-CaNaCa2[Al5Si5O20] · 6H2OOrth. mmm (2/m 2/m 2/m)
Thomsonite-SrNa(Sr,Ca)2[Al5Si5O20] · 7H2OOrth. mmm (2/m 2/m 2/m)
Tschernichite(Ca,Na2)[Al2Si4O12] · 4-8H2OTet. 4/mmm (4/m 2/m 2/m) : P4/mmm
TschörtneriteCa4(Ca,Sr,K,Ba)3Cu3[(OH)2|Al3Si3O12]4 · nH2OIso. m3m (4/m 3 2/m) : Fm3m
WairakiteCa(Al2Si4O12) · 2H2OMon. 2/m
WeinebeneiteCaBe3(PO4)2(OH)2 · 4H2OMon.
Wenkite(Ba,K)4(Ca,Na)6[(SO4)3|(Si,Al)20O39(OH)2] · 0.5H2OHex.
WillhendersoniteKCa[Al3Si3O12] · 5H2OTric.
YugawaraliteCaAl2Si6O16 · 4H2OMon.

Common AssociatesHide

Associated Minerals Based on Photo Data:
Hematite2 photos of Brewsterite-Ba associated with Hematite on
Pectolite2 photos of Brewsterite-Ba associated with Pectolite on
Sphalerite1 photo of Brewsterite-Ba associated with Sphalerite on
Quartz1 photo of Brewsterite-Ba associated with Quartz on
Prehnite1 photo of Brewsterite-Ba associated with Prehnite on

Related Minerals - Nickel-Strunz GroupingHide

9.GE.05Clinoptilolite-KK6(Si30Al6)O72·20H2OMon. 2/m
9.GE.05Clinoptilolite-NaNa6(Si30Al6)O72·20H2OMon. 2/m : B2/m
9.GE.05Heulandite-Ca(Ca,Na)5(Si27Al9)O72 · 26H2OMon. 2/m : B2/m
9.GE.05Heulandite-K(K,Ca,Na)5(Si27Al9)O72 · 26H2OMon. 2/m : B2/m
9.GE.05Heulandite-Na(Na,Ca,K)6(Si,Al)36O72 · 22H2OMon. 2/m : B2/m
9.GE.05Heulandite-Sr(Sr,Na,Ca)5(Si27Al9)O72 · 24H2OMon. 2/m : B2/m
9.GE.05Heulandite-Ba(Ba,Ca,K)5(Si27Al9)O72 · 22H2OMon. 2/m : B2/m
9.GE.10Stilbite-CaNaCa4[Al9Si27O72] · nH2OMon. 2/m : B2/m
9.GE.10Stilbite-Na(Na,Ca,K)6-7[Al8Si28O72] · nH2OMon. 2/m : B2/m
9.GE.15Barrerite(Na,K,Ca0.5)2[Al2Si7O18] · 7H2OOrth. mmm (2/m 2/m 2/m)
9.GE.15StelleriteCa4(Si28Al8)O72 · 28H2OOrth. mmm (2/m 2/m 2/m) : Fmmm
9.GE.20Brewsterite-Sr(Sr,Ba,Ca)[Al2Si6O16] · 5H2O

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.

References for Brewsterite-BaHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Cabella, R., Lucchetti, G., Palenzona, A., Quartieri, S., Vezzalini, G. (1993): First occurrence of a Ba-dominant brewsterite: structural features. European Journal of Mineralogy. 5, 353-360.
Robinson, G.W. & Grice, J.D. (1993): The barium analog of brewsterite from Harrisville, New York. Canadian Mineralogist. 31, 687-690.
Coombs, D.S. et Al. (1997): Recommended nomenclature for zeolite minerals: report of the Subcommittee on Zeolites of the International Mineralogical Association, Commission on New Minerals and Mineral Names. The Canadian Mineralogist. 35, 1571-1606.
Alberti, A., Sacerdoti, M., Quartieri, S., Vezzalini, G. (1999): Heating-induced phase transformation in zeolite brewsterite: new 4- and 5-coordinated (Si,Al) sites. Physics and Chemistry of Minerals, 26, 181-186.
Sacerdoti, M., Vezzalini, G., Quartieri, S. (2000): Dehydration mechanism in brewsterite: Single crystal X-ray diffraction study. Microporous and Mesoporous Materials, 41, 107-118.

Internet Links for Brewsterite-BaHide

Localities for Brewsterite-BaHide

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.
  • Ontario
    • Peterborough Co.
      • Methuen Township
van Velthuizen, J. (2006): Zeolite occurrences in the Central Metasedimentary Belt of the Grenville Province, Ontario, Quebec and New York State. Mineralogical Record 37 (4): 283-296; Van Velthuizen, J. (2006): Zeolite occurrences in the Central Metasedimentary Belt of the Grenville Province, Ontario, Quebec and New York State.
  • Auvergne-Rhône-Alpes
    • Savoie
      • Tarentaise valley
        • Ruitor massif
          • Sainte-Foy
Guichon, F. (2006). "Une zéolite rare à Sainte Foy Tarentaise (Savoie): la brewsterite-(Ba)." Le Règne Minéral(72), 29-38.
  • Co. Wicklow
    • Glendasan
Green, D.I., Tindle, A.G. & Moreton, S. (2005) Brewsterite-Ba and harmotome from the Wicklow lead mines, Co. Wicklow, Ireland. Irish J. Earth Sci., 23, 101-6.
Italy (TL)
  • Liguria
    • La Spezia Province
      • Vara Valley
        • Borghetto Vara
European Journal of Mineralogy, 5, 353-360.
  • Buskerud
    • Flesberg
      • Svene
        • Kongsberg Silver Mining District
          • Vinoren Silver Mine Field
            • Vinoren Southern Mines
Larsen, A.O.; Nordrum, F.S. & Erambert, M. (2003): Mineraler i brewsterittserien fra norske lokaliteter. Bergverksmuseet Skrift 25: 41-42
    • Kongsberg
      • Kongsberg Silver Mining District
        • Overberget Mining Field
Larsen, A.O.; Nordrum, F.S. & Erambert, M. (2003): Mineraler i brewsterittserien fra norske lokaliteter. Bergverksmuseet Skrift 25: 41-42
  • Oppland
    • Sel
      • Sjoa
Larsen, A.O.; Nordrum, F.S. & Erambert, M. (2003): Mineraler i brewsterittserien fra norske lokaliteter. Bergverksmuseet Skrift 25: 41-42
  • Scotland
    • North West Highlands
Probed (Marco E. Ciriotti information)
  • New York
    • Lewis Co.
      • Diana Township
Robinson, G.W. & Grice, J.D. (1993): The barium analog of brewsterite from Harrisville, New York. Canadian Mineralogist, 31, 676-690.
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