Skutterudite

The Skutterite series is a series of related arsenide minerals which differ in the percentage of cobalt, nickel, and iron they contain.

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Information about Skutterudite

The Skutterite series is a series of related arsenide minerals which differ in the percentage of cobalt, nickel, and iron they contain.

Skutterite is mined as an ore of cobalt and nickel, making it an important industrial mineral.

It was named after its type locality – Skuterud Mines, Modum, Buskerud, Norway.


Mineralogy

Chemistry
Cobalt nickel arsenide with the following formulas for the different end-members.

  • Skutterudite (Co,Ni)As3
  • Nickelskutterudite (Ni,Co)As3
  • Ferroskutterudite (Fe,Co)As3
Colours and Variations
Silvery white to grey, can tarnish.
Streak
Black
Luster
Metallic
Transparency
Opaque
Fracture
Uneven
Crystal habit
Cubic, octahedral, etc – usually combinations. Druzy and masses of small crystals is common. Can be massive.
Mohs hardness
5.5 – 6
Fluorescence
Specific Gravity
6.4 – 6.9
Easiest testing method

Hazards and Warnings

 

Toxic mineral, contains arsenic, cobalt, nickel.

Mineral collectors should wash their hands after handling specimens, to avoid any exposure to potential toxins.
Almost all rocks, minerals (and, frankly, almost all other substances on earth) can produce toxic dust when cutting, which can cause serious respiratory conditions including silicosis. When cutting or polishing rocks, minerals, shells, etc, all work should be done wet to minimise the dust, and a suitable respirator or extraction system should be used.


Translations

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English:

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Russian:

  • Скуттерудит

French:

Japanese:

  • スカッタルダイト

Spanish:

  • Skutterudita

German:

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Thai:

Gujurati:

Mandarin Chinese:

Urdu:


Further Reading / External Links