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 GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportAdd Glossary Item
StatisticsMember 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.
Na2Ti4(SiO4)3(OH)O3 · 7H2O
Colorless to pale brown
Named in honor of Gregory Yur’evich Ivanyuk, Russian mineralogist and petrologist, head of the Laboratory of Self-Organized Mineral Systems in the Geological Institute of the Kola Science Centre of the Russian Academy of Sciences.
A polytype of Ivanyukite-Na

Classification of Ivanyukite-Na-T

Approved 2007 URL:
Please feel free to link to this page.

Type Occurrence of Ivanyukite-Na-T

Geological Setting of Type Material:
Ivanyukite-Na-T is a low-temperature hydrothermal mineral crystallized from supersaturated Na-rich aqueous solutions

Physical Properties of Ivanyukite-Na-T

Diaphaneity (Transparency):
Colorless to pale brown
Hardness (Mohs):
on {1011}
2.7 g/cm3 (Measured)    2.384 g/cm3 (Calculated)

Crystallography of Ivanyukite-Na-T

Crystal System:
Class (H-M):
3m - Ditrigonal Pyramidal
Space Group:
Cell Parameters:
a = 10.921(3) Å, c = 13.885(4) Å
a:c = 1 : 1.271
Unit Cell Volume:
V 1,434.17 ų (Calculated from Unit Cell)

Optical Data of Ivanyukite-Na-T

Uniaxial (+)
RI values:
nω = 1.760() nε = 1.850(9)
Max Birefringence:
δ = 0.090
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Very High

Chemical Properties of Ivanyukite-Na-T

Na2Ti4(SiO4)3(OH)O3 · 7H2O
Essential elements:
All elements listed in formula:

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 Ivanyukite-Na-T

Reference List:
Victor N. Yakovenchuk, Alexander P. Nikolaev, Ekaterina A. Selivanova, Yakov A. Pakhomovsky, Julia A. Korchak, Dar’ya V. Spiridonova, Oleg A. Zalkind, and Sergey V. Krivovichev (2009): Ivanyukite-Na-T, ivanyukite-Na-C, ivanyukite-K, and ivanyukite-Cu: New microporous titanosilicates from the Khibiny massif (Kola Peninsula, Russia) and crystal structure of ivanyukite-Na-T. American Mineralogist, 94, 1450–1458.

Internet Links for Ivanyukite-Na-T

Localities for Ivanyukite-Na-T

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
        • Khibiny Massif
          • Koashva Mt
American Mineralogist, Volume 94, pages 1450–1458, 2009
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 1993-2015, except where stated. relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: October 4, 2015 20:42:19 Page generated: September 23, 2015 23:44:02