Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Chat Now! (2 online) Mindat Auctions

Brewsterite-Sr

Big Photo

Whitesmith Mine, Strontian, North West Highlands (Argyllshire), Scotland, UK
© Elmar Lackner

Show Brewsterite-Sr Photos (21)
Formula:
(Sr,Ba,Ca)[Al
 
2
Si
 
6
O
 
16
] · 5H
 
2
O
Colour:WhiteLustre:Vitreous
Hardness:5
Name:
Named after David Brewster (1781-1868), Scottish physicist, who studied the optical properties of minerals and the element Strontium.


Zeolite Group. The strontium analogue of Brewsterite-Ba.

Classification of Brewsterite-Sr

IMA status:Approved
Strunz 8th edition ID:8/J.23-80
Nickel-Strunz 10th (pending) edition ID:9.GE.20

9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
E : Chains of T10O20 Tetrahedra
mindat.org URL:http://www.mindat.org/min-6833.html
Please feel free to link to this page.

Type Occurrence of Brewsterite-Sr

Type Locality:Strontian, North West Highlands (Argyllshire), Scotland, UK

Physical Properties of Brewsterite-Sr

Lustre:Vitreous
Colour:White
Streak:White
Hardness (Mohs):5

Optical Data of Brewsterite-Sr

Type:Biaxial (+)
RI values: nα = 1.510 nβ = 1.512 nγ = 1.523
Maximum Birefringence:δ = 0.013

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Low
Dispersion:none

Chemical Properties of Brewsterite-Sr

Formula:
(Sr,Ba,Ca)[Al
 
2
Si
 
6
O
 
16
] · 5H
 
2
O
Essential elements:Al, H, O, Si, Sr
All elements listed in formula:Al, Ba, Ca, H, O, Si, Sr

Relationship of Brewsterite-Sr to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.GE.05Clinoptilolite-Ca
(Ca,Na,K)
 
2-3
Al
 
3
(Al,Si)
 
2
Si
 
13
O
 
36
·12H
 
2
O
9.GE.05Clinoptilolite-K
(K,Na,Ca)
 
2-3
Al
 
3
(Al,Si)
 
2
Si
 
13
O
 
36
·12H
 
2
O
9.GE.05Clinoptilolite-Na
(Na,K,Ca)
 
2-3
Al
 
3
(Al,Si)
 
2
Si
 
13
O
 
36
·12H
 
2
O
9.GE.05Heulandite-Ca
(Ca,Na)
 
2-3
Al
 
3
(Al,Si)
 
2
Si
 
13
O
 
36
·12H
 
2
O
9.GE.05Heulandite-K
(K,Na,Ca)
 
2-3
Al
 
3
(Al,Si)
 
2
Si
 
13
O
 
36
·12H
 
2
O
9.GE.05Heulandite-Na
(Na,Ca)
 
2-3
Al
 
3
(Al,Si)
 
2
Si
 
13
O
 
36
·12H
 
2
O
9.GE.05Heulandite-Sr
(Sr,Na,Ca)
 
2-3
Al
 
3
(Al,Si)
 
2
Si
 
13
O
 
36
·12H
 
2
O
9.GE.05Heulandite-Ba
(Ba,Ca,K,Na,Sr)
 
5
Al
 
9
Si
 
27
O
 
72
·22H
 
2
O
9.GE.10Stilbite-Ca
NaCa
 
4
[Al
 
9
Si
 
27
O
 
72
] · nH
 
2
O
9.GE.10Stilbite-Na
Na
 
3
Ca
 
3
[Al
 
8
Si
 
28
O
 
72
]·nH
 
2
O
9.GE.15Barrerite
(Na,K,Ca
 
0.5
)
 
2
[Al
 
2
Si
 
7
O
 
18
] · 7H
 
2
O
9.GE.15Stellerite
Ca[Al
 
2
Si
 
7
O
 
18
] · 7H
 
2
O
9.GE.20Brewsterite-Ba
(Ba,Sr)[Al
 
2
Si
 
6
O
 
16
] · 5H
 
2
O

Other Names for Brewsterite-Sr

Other Languages:
Russian:Брюстерит-Sr

Other Information

Health Warning: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-Sr

Reference List:Acta Crystallographica: B33: 2907-2910.

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., M. Sacerdoti, S. Quartieri, and G. Vazzalini (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., G. Vazzalini, and S. Quartieri (2000), Dehydration mechanism in brewsterite: Single crystal X-ray diffraction study: Microporous and Mesoporous Materials: 41: 107-118.

Internet Links for Brewsterite-Sr

Search Engines:
  • Look for Brewsterite-Sr on Google
  • Look for Brewsterite-Sr images on Google
    • External Links:
  • Look for Brewsterite-Sr on Webmineral
  • Look for Brewsterite-Sr on Athena Mineralogy
  • Look for Brewsterite-Sr on Wikipedia
  • Look for Brewsterite-Sr on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Brewsterite-Sr in the Natural History Museum (London) online catalogue
    • Mineral Dealers:
  • Fabre Minerals - search for Brewsterite-Sr specimens
  • Wilensky Fine Minerals
  • Buy from David K Joyce minerals
  • rare and unusual minerals mainly crystallized
  • Buy fine minerals and gemstones from Pala International
  • Lapis Mineral Magazin
  • Find Brewsterite-Sr on www.crystalclassics.co.uk
  • High-end worldwide specimens & outstanding customer service
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • The Arkenstone - Fine Minerals
  • Search for - Brewsterite-Sr - on e-Rocks Mineral Sales & Auctions
  • Buy RARE Minerals from Rocks of Africa
    • Jobs:
  • Mining & Geology Jobs

    • Page Sponsor

    Sponsorship:This page is currently not sponsored. Click here to sponsor this page.

    Localities for Brewsterite-Sr

    Show Locality List (10 Items)
    The 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.
    Mineral and/or Locality
    Google
     
    www.mindat.org Web
    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 25th Nov 2009 21:35:52