Linnaeite Location: Cobalt, Ontario, Canada. Copyright: © Lou Perloff / Photo Atlas of Minerals
Chemical Formula: Co2+Co3+2S4
Locality: Bastnäs mines, Riddarhyttan, Västmanland, Sweden.
Name Origin: Named after the Swedish botanist, C. Linne (1707-1778).Linnaeite is a cobalt sulfide mineral with the composition Co2+Co3+2S4. It was discovered in 1845 in Västmanland, Sweden, and was named to honor Carl Linnaeus (1707–1778).Linnaeite forms a series with polydymite, Ni+2Ni+32S4. Linnaeite is found in hydrothermal veins with other cobalt and nickel sulfides in many localities around the world


Discovery date : 1845
Country of Origin: SUEDE

Optical properties

Optical and misc. Properties : Opaque
Reflective Power: 44,7% (580)

Physical Properties

Cleavage: {100} Imperfect
Color:     Violet gray, Copper red, Light gray, Steel gray.
Density: 4.8
Diaphaneity: Opaque
Fracture: Uneven – Flat surfaces (not cleavage) fractured in an uneven pattern.
Hardness: 4.5-5.5 – Near Apatite
Luminescence: Non-fluorescent.
Luster: Metallic
Magnetism: Nonmagnetic
Streak: grayish black

Photos :

Linnaeite, Millerite Locality: Victoria Mine, Littfeld, Siegerland, North Rhine-Westphalia, Germany Photo Copyright © Leon Hupperichs
Linnaeite-Polydymite Series, Millerite Locality: Donnerkuhle Quarry, Hagen, Sauerland, North Rhine-Westphalia, Germany Photo Copyright © Harjo Neutkens
Müsen, Siegerland, North Rhine-Westphalia, Germany © Peter Haas