Help|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on MindatThe Mindat Store
Minerals by PropertiesMinerals by ChemistryRandom MineralSearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery


This page is currently not sponsored. Click here to sponsor this page.
(Na,Ce,Ba)2TiSi3O5(OH)10 · nH2O
Bright yellow
This page provides mineralogical data about Ilmajokite.

Classification of Ilmajokite


9 : SILICATES (Germanates)
H : Unclassified silicates
B : With Ti, V, Cr

78 : Unclassified Silicates
7 :

Physical Properties of Ilmajokite

Bright yellow
Hardness (Mohs):

Optical Data of Ilmajokite

Biaxial (+)
RI values:
nα = 1.573 nβ = 1.576 nγ = 1.579
Measured: 90° , Calculated: 88°
Max Birefringence:
δ = 0.006
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
r < v strong

Chemical Properties of Ilmajokite

(Na,Ce,Ba)2TiSi3O5(OH)10 · nH2O
IMA Formula:
(Na,Ce,Ba)10Ti5Si14O22(OH)44 · nH2O
Elements listed in formula:
Common Impurities:

Crystallography of Ilmajokite

Crystal System:
Cell Parameters:
a = 23 Å, b = 24.4 Å, c = 37 Å
a:b:c = 0.943 : 1 : 1.516
Unit Cell Volume:
V 0.00 ų (Calculated from Unit Cell)

Type Occurrence of Ilmajokite

Relationship of Ilmajokite to other Species

Other Names for Ilmajokite

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 Ilmajokite

Reference List:
American Mineralogist (1973): 58: 139.

Internet Links for Ilmajokite URL:
Please feel free to link to this page.

Localities for Ilmajokite

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.
Russia (TL)
  • Northern Region
    • Murmanskaja Oblast'
      • Kola Peninsula
        • Lovozero Massif
          • Karnasurt Mt
            • Karnasurt underground mine
              • Karnasurt area
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow; Pluth, J. J., Smith, J. V., Pushcharovsky, D. Y., Semenov, E. I., Bram, A., Riekel, C., ... & Broach, R. W. (1997). Third-generation synchrotron x-ray diffraction of 6-μm crystal of raite,≈ Na3Mn3Ti0. 25Si8O20 (OH) 2⋅ 10H2O, opens up new chemistry and physics of low-temperature minerals. Proceedings of the National Academy of Sciences, 94(23), 12263-12267.
Mineral and/or Locality is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © and the Hudson Institute of Mineralogy 1993-2017, except where stated. relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: July 22, 2017 05:40:54 Page generated: July 2, 2017 08:25:03
Go to top of page