Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Chat Now! (10 online) Mindat Auctions

Ilmajokite

Big Photo

Yubileinaya (Yubileinoye; Jubilejnaja) pegmatite, Karnasurt Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
© Pavel M. Kartashov

Show Ilmajokite Photos (5)
Formula:
(Na,Ce,Ba)
 
2
TiSi
 
3
O
 
5
(OH)
 
10
·nH
 
2
O
System:MonoclinicColour:Bright yellow
Hardness:1
This page provides mineralogical data about Ilmajokite.

Classification of Ilmajokite

IMA status:Approved
Strunz 8th edition ID:8/B.16-20
Nickel-Strunz 10th (pending) edition ID:9.HB.05

9 : SILICATES (Germanates)
H : Unclassified silicates
B : With Ti, V, Cr
Dana 8th edition ID:78.7.5.1

78 : Unclassified Silicates
7 :
mindat.org URL:http://www.mindat.org/min-2012.html
Please feel free to link to this page.

Type Occurrence of Ilmajokite

Type Locality:Il'majok (Ilmaiok) River, Karnasurt Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
Year of Discovery:1972

Physical Properties of Ilmajokite

Colour:Bright yellow
Hardness (Mohs):1

Crystallography of Ilmajokite

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

Optical Data of Ilmajokite

Type:Biaxial (+)
RI values: nα = 1.573 nβ = 1.576 nγ = 1.579
2V:Measured: 90° , Calculated: 88°
Maximum Birefringence:δ = 0.006

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Low
Dispersion:r < v strong

Chemical Properties of Ilmajokite

Formula:
(Na,Ce,Ba)
 
2
TiSi
 
3
O
 
5
(OH)
 
10
·nH
 
2
O
Essential elements:H, Na, O, Si, Ti
All elements listed in formula:Ba, Ce, H, Na, O, Si, Ti
Common Impurities:Zr,Al,TR,Fe,Nb,Ta,Ca,Sr,K,C

Relationship of Ilmajokite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.HB.10Rilandite
Cr
 
4
Al
 
2
SiO
 
11
·5H
 
2
O or near

Other Names for Ilmajokite

Synonyms:
IMA1971-027
Other Languages:
German:Ilmajokit
Spanish:Ilmajokita

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 Ilmajokite

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

Articles/Blogs about Ilmajokite

Internet Links for Ilmajokite

Search Engines:
  • Look for Ilmajokite on Google
  • Look for Ilmajokite images on Google
    • External Links:
  • Look for Ilmajokite on Webmineral
  • Look for Ilmajokite on Athena Mineralogy
  • Look for Ilmajokite on Wikipedia
  • Look for Ilmajokite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Ilmajokite in the Natural History Museum (London) online catalogue
  • Ilmajokite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
  • Buy fine minerals and gemstones from Pala International
  • Fabre Minerals - search for Ilmajokite specimens
  • Wendel Minerals - Auktion & Shop
  • The Arkenstone - Fine Minerals
  • Search for Ilmajokite at Thames Valley Minerals
  • Lapis Mineral Magazin
  • High-end worldwide specimens & outstanding customer service
  • Rare and Unusual minerals at Mineralogical Research Company
  • Wright's Rock Shop - excellent mineral specimens since 1970
  • Search for - Ilmajokite - on e-Rocks Mineral Sales & Auctions
  • Top quality minerals from Kristalle of California
  • Buy minerals from Mineralium.com
    • Jobs:
  • Mining & Geology Jobs

    • Page Sponsor

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

    Localities for Ilmajokite

    (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.
    Russia
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Lovozero Massif
            • Karnasurt Mt
    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.