Nickeline

Nickeline, also known as niccolite, is a metallic mineral used as a Nickel ore and a minor ore of Arsenic. It is also prized by mineral collectors.

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Information about Nickeline

Nickeline, also known as niccolite, is a metallic mineral characterized by its bronze-red to pinkish metallic hue and tarnished surfaces that often exhibit an iridescent or brassy yellow appearance.

It typically occurs in massive or compact forms and less frequently in botryoidal or columnar shapes. Its metallic luster and distinctive colour make it visually striking and easily recognizable among sulphide minerals.

Nickeline is a member of the nickeline group, which includes other minerals:

  • Achávalite
  • Breithauptite
  • Freboldite
  • Kotulskite
  • Langisite
  • Nickeline
  • Sederholmite
  • Sobolevskite
  • Stumpflite
  • Sudburyite
  • Vavřínite
  • Zlatogorite

 


Uses and History

Nickeline can be used an ore of nickel. Unfortunately, the arsenic sometimes renders the ore uneconomical as it makes extraction much more toxic and complex. It could potentially be used as an ore of arsenic.

The mineral was first described in 1751 by Axel Fredrik Cronstedt, the Swedish chemist who also discovered nickel. Cronstedt initially thought nickeline contained copper but later identified nickel as a new element within the mineral.

It was later named nickeline in 1832 by F. S. Beudant, and later niccolite by Dana in 1868. In 1971 the IMA recommended use of the name nickeline instead of niccolite.

 


Mineralogy

Chemistry
A arsenide mineral with the chemical formula NiAs.
Colours and Variations

Pale copper-red, tarnishing to a silver-grey blackish metallic colour.

Streak
Brownish black
Luster
Metallic
Transparency
Opaque
Fracture
Conchoidal
Crystal habit
Massive columnar to reniform, very rarely striated crystals.
Mohs hardness
5.0 – 5.5
Fluorescence
Specific Gravity
7.8
Easiest testing method

Hazards and Warnings

Toxic mineral: contains nickel and arsenic.

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

Arabic:

  • نيكيلين

Hindi:

Portuguese:

  • Niquelina

Bengali:

Indonesian:

Punjabi:

English:

  • nickeline
  • niccolite

Italian:

Russian:

  • Никелин

French:

  • Nickéline

Japanese:

Spanish:

  • Niquelina

German:

  • Nickelin

Korean:

Thai:

Gujurati:

Mandarin Chinese:

  • 砷镍矿

Urdu:


Further Reading / External Links