Nickeline with Nickelskutterudite

Nickeline – NiAs

Elements: Nickel, Arsenic

Class: Sulfides

Crystal System: Orthorhombic

Hardness: 5-5.5

Apatite

Talc (1)Diamond (10)

About as hard as a steel knife blade.

Nickelskutterudite – NiAs₃

Elements: Nickel, Arsenic

Class: Sulfides

Crystal System: Cubic

Hardness: 5.5-6

Orthoclase

Talc (1)Diamond (10)

Scratches glass. Harder than a steel knife.

Origin: Shneeberg, Erzgebigskreis, Saxony – Germany

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