Editorial Feature

Oulankaite – Occurrences, Properties and Distribution

Oulankaite is named after the Oulanka river, where it was first discovered.

Properties of Oulankaite

The key physical properties of Oulankaite are as below:

  • Cell Data
    • a = 9.044
    • c=4.937
    • Z = 2
  • Crystal Data
    • Tetragonal
    • Crystals – subhedral crystals, occurs as crystals that tend to exhibit a recognizable crystalline structure
    • X-ray diffraction: 2.472(1), 2.26(0.9), 2.022(0.6)
  • Chemical Composition
    Elements Content 1 (%)
    Iron, Fe 4.21
    Copper, Cu 14.36
    Tin, Sn 8.94
    Tellurium, Te 19.22
    Palladium, Pd 30.6
    Platinum, Pt 18.37
    Sulfur, S 4.93
  • Estimated Properties
    Electron density Bulk density (electron density)= 9.36 g/cm3
    note: Specific gravity of Oulankaite = 10.9 g/cm3
    Photoelectric PEOulankaite = 457.19 barns/electron
    U=PEOulankaite x ρelectron density= 4280.02 barns/cm3
    Fermion index Fermion index = 0.16
    Boson index = 0.84
    GRapi = 0 (Gamma Ray American Petroleum Institute Units)
    Oulankaite is not radioactive

How to Identify Oulankaite

Oulankaite appears in the form of opaque rose or violet rose crystals. It exhibits a metallic lustre and is non-luminescent by nature. Its hardness ranges between 3.5 and 4.

Global Distribution

Oulankaite is only known to occur in Russia, in the Karelia Republic, Northern Karelia, as part of the Oulanka plutonic complex.


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