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Brewsterite-Ba

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David Brewster
Formula:
(Ba,Sr)[Al2Si6O16] · 5H2O
System:
Monoclinic
Colour:
White, Colorless, Pale ...
Lustre:
Vitreous
Hardness:
5
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.


Classification of Brewsterite-Ba

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-Ba

Vitreous
Diaphaneity (Transparency):
Transparent
Colour:
White, Colorless, Pale Pink
Hardness (Mohs):
5
Density:
2.453 g/cm3 (Measured)    2.5 g/cm3 (Calculated)

Optical Data of Brewsterite-Ba

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-Ba

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

Crystallography of Brewsterite-Ba

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

Type Occurrence of Brewsterite-Ba

Relationship of Brewsterite-Ba to other Species

Member of:
Other Members of Group:
AlflarseniteNaCa2Be3Si4O13(OH) · 2H2O
AmiciteK2Na2Al4Si4O16 · 5H2O
Ammonioleucite(NH4,K)(AlSi2O6)
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-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-KK4(Si20Al4O48)·13H2O
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.
HsianghualiteCa3Li2(Be3Si3O12)F2
KirchhoffiteCs(BSi2O6)
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
Stilbite-Na(Na,Ca,K)6-7[Al8Si28O72] · 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.05Clinoptilolite-CaCa3(Si30Al6)O72·20H2O
9.GE.05Clinoptilolite-KK6(Si30Al6)O72·20H2O
9.GE.05Clinoptilolite-NaNa6(Si30Al6)O72·20H2O
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.10Stilbite-Na(Na,Ca,K)6-7[Al8Si28O72] · nH2O
9.GE.15Barrerite(Na,K,Ca0.5)2[Al2Si7O18] · 7H2O
9.GE.15StelleriteCa4(Si28Al8)O72 · 28H2O
9.GE.20Brewsterite-Sr(Sr,Ba,Ca)[Al2Si6O16] · 5H2O

Other Names for Brewsterite-Ba

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 Brewsterite-Ba

Reference List:
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-Ba

mindat.org URL:
https://www.mindat.org/min-6832.html
Please feel free to link to this page.

Localities for Brewsterite-Ba

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.
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.
Mineral and/or Locality  
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