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Brewsterite-Ba

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David Brewster
Formula:
(Ba,Sr)[Al2Si6O16] · 5H2O
Colour:
White, Colorless, Pale Pink
Lustre:
Vitreous
Hardness:
5
Specific Gravity:
2.453
Crystal System:
Monoclinic
Member of:
Name:
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

Approved
9.GE.20

9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
E : Chains of T10O20 Tetrahedra
Dana 7th ed.:
77.1.7.1

Physical Properties of Brewsterite-BaHide

Vitreous
Transparency:
Transparent
Colour:
White, Colorless, Pale Pink
Hardness:
Density:
2.453 g/cm3 (Measured)    2.5 g/cm3 (Calculated)

Optical Data of Brewsterite-BaHide

Type:
Biaxial (+)
RI values:
nα = 1.510 - 1.514 nβ = 1.512 - 1.516 nγ = 1.523 - 1.528
2V:
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:
Low
Dispersion:
strong

Chemical Properties of Brewsterite-BaHide

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

Crystallography of Brewsterite-BaHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/m

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
Ammonioleucite(NH4,K)(AlSi2O6)Tet.
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-KK4(Si20Al4O48)·13H2OMon.
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.
Faujasite SubgroupA 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.
HsianghualiteCa3Li2(Be3Si3O12)F2
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 mindat.org.
Pectolite2 photos of Brewsterite-Ba associated with Pectolite on mindat.org.
Sphalerite1 photo of Brewsterite-Ba associated with Sphalerite on mindat.org.
Quartz1 photo of Brewsterite-Ba associated with Quartz on mindat.org.
Prehnite1 photo of Brewsterite-Ba associated with Prehnite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.GE.05Clinoptilolite-CaCa3(Si30Al6)O72·20H2OMon.
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.
Canada
 
  • 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.
France
 
  • 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.
Ireland
 
  • 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.
Norway
 
  • 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
UK
 
  • Scotland
    • North West Highlands
Probed (Marco E. Ciriotti information)
USA (TL)
 
  • 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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