Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Chat Now! (6 online) Mindat Auctions

Eudialyte Group

Big Photo

Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville Co., Québec, Canada

Show Eudialyte Group Photos (6)


A complex group of trigonal cyclosilicates with both three-fold (Si3O9)6- and nine-fold (Si9O27)18- rings. In some members, two nine-fold rings are bridged by a single silicon atom to give a [(Si9O27)2 SiO]34- group.

Classification of Eudialyte Group

Dana 7th edition ID:64.1.1.0
mindat.org URL:http://www.mindat.org/min-11021.html
Please feel free to link to this page.

Relationship of Eudialyte Group to other Species

Group Members:
Eudialyte
Na
 
15
Ca
 
6
(Fe
2+
 
,Mn
2+
 
)
 
3
Zr
 
3
[Si
 
25
O
 
73
](O,OH,H
 
2
O)
 
3
(OH,Cl)
 
2
Feklichevite
Na
 
11
Ca
 
9
(Fe
3+
 
,Fe
2+
 
)
 
2
Zr
 
3
Nb[Si
 
25
O
 
73
](OH,H
 
2
O,Cl,O)
 
5
Kentbrooksite
(Na,REE)
 
15
(Ca,REE)
 
6
(Mn
2+
 
,Fe
2+
 
)
 
3
Zr
 
3
Nb[Si
 
25
O
 
74
]F
 
2
·2H
 
2
O
Khomyakovite
Na
 
12
Sr
 
3
Ca
 
6
Fe
 
3
Zr
 
3
W[Si
 
25
O
 
73
](O,OH,H
 
2
O)
 
3
(OH,Cl)
 
2
Manganokhomyakovite
Na
 
12
Sr
 
3
Ca
 
6
Mn
 
3
Zr
 
3
W[Si
 
25
O
 
73
](O,OH,H
 
2
O)
 
3
(OH,Cl)
 
2
Oneillite
Na
 
15
Ca
 
3
Mn
 
3
Fe
2+
3
Zr
 
3
Nb(Si
 
25
O
 
73
)(O,OH,H
 
2
O)
 
3
(OH,Cl)
 
2
Minerals Related to Group:
:
Na
 
19
(Ca,Mn)
 
6
(Ti,Nb)
 
3
Si
 
26
O
 
74
Cl·2H
 
2
O
Related Minerals - Dana Grouping):

- +
64.1.1.1Eudialyte
Na
 
15
Ca
 
6
(Fe
2+
 
,Mn
2+
 
)
 
3
Zr
 
3
[Si
 
25
O
 
73
](O,OH,H
 
2
O)
 
3
(OH,Cl)
 
2
64.1.1.2Feklichevite
Na
 
11
Ca
 
9
(Fe
3+
 
,Fe
2+
 
)
 
2
Zr
 
3
Nb[Si
 
25
O
 
73
](OH,H
 
2
O,Cl,O)
 
5
64.1.1.3Kentbrooksite
(Na,REE)
 
15
(Ca,REE)
 
6
(Mn
2+
 
,Fe
2+
 
)
 
3
Zr
 
3
Nb[Si
 
25
O
 
74
]F
 
2
·2H
 
2
O
64.1.1.4Khomyakovite
Na
 
12
Sr
 
3
Ca
 
6
Fe
 
3
Zr
 
3
W[Si
 
25
O
 
73
](O,OH,H
 
2
O)
 
3
(OH,Cl)
 
2
64.1.1.5Manganokhomyakovite
Na
 
12
Sr
 
3
Ca
 
6
Mn
 
3
Zr
 
3
W[Si
 
25
O
 
73
](O,OH,H
 
2
O)
 
3
(OH,Cl)
 
2

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 Eudialyte Group

Reference List:Johnsen, O. and Grice, J.D. (1999) The crystal chemistry of the eudialyte group. Canadian Mineralogist: 37: 865-891.

Johnsen, O., Ferraris, G., Gault, R.A., Grice, J.D., Kampf, A.R., and Pekov, I.V. (2003a) The nomenclature of eudialyte-group minerals. Canadian Mineralogist: 41: 785-794.

Rozenberg, K.A., Rastsvetaeva, R.K., Khomyakov, A.P. (2006): Decationized and hydrated eudialytes. Oxonium problem. European Journal of Mineralogy, 17, 875-882.

Khomyakov, A.P., Nechelyustov, G.N., Rastsvetaeva, R.K. (2007): Aqualite, (H3O)8(Na,K,Sr)5Ca6Zr3Si26O66(OH)9Cl, a new eudialyte-group mineral from Inagli alkaline massif (Sakha-Yakutia,Russia),and the problem of oxonium in hydrated eudialytes. Proceedings of the Russian Mineralogical Society (Zapiski RMO), 136(2), 39-55.

Articles/Blogs about Eudialyte Group

Internet Links for Eudialyte Group

Search Engines:
  • Look for Eudialyte Group on Google
  • Look for Eudialyte Group images on Google
    • Mineral Dealers:
  • Rare and Unusual minerals at Mineralogical Research Company
  • Search for - Eudialyte Group - on e-Rocks Mineral Sales & Auctions
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Find Eudialyte Group on www.crystalclassics.co.uk
  • Buy fine minerals and gemstones from Pala International
  • Buy Fine Minerals from mineralsweb.com
  • Lapis Mineral Magazin
  • Buy from David K Joyce minerals
  • Wright's Rock Shop - excellent mineral specimens since 1970
  • Wendel Minerals - Auktion & Shop
  • High-end worldwide specimens & outstanding customer service
  • Fine Minerals from Dan Weinrich Minerals
    • Jobs:
  • Mining & Geology Jobs

    • Page Sponsor

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

    Localities for Eudialyte Group

    Hide Locality List
    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.
    These maps work faster with Firefox!
    (TL) indicates type locality. ? 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.
    Norway
     
    • More og Romsdal
    • Vestfold
      • Larvik
        • Langesundsfjorden
          • Barkevik
    		Field observation by Peter Andresen, 2008.
        • Tvedalen
          • Tuften (Tuften 1 Quarry; Tuften 2 Quarry)
    		Collection of Peter Andresen.
      • Sandefjord
        • Vesterøya
    Portugal
     
    • Azores District
      • San Miguel Island
    		Ridolfi, F. et al. (2003): Evolutionary stages of crystallisation..., Min. Mag. 67(4), 749-767
    Ternes, B. (1999): Mineralien von der Azoreninsel Sao Miguel (Portugal). Lapis, 24 (1), 20-42
    Mineral and/or Locality
    Google
     
    www.mindat.org Web
    Copyright © Jolyon & Ida Ralph 1993-2008. 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.