Formula: FeAs₂

Species: Sulfides

Colour: Steel gray to silver white

Lustre: Metallic

Hardness: 5 – 5½

Specific Gravity: 7.43

Crystal System: Orthorhombic

Member of: Löllingite Group, Forms a series with safflorite and can also contain considerable amounts of nickel (solid solution with rammelsbergite).

Name: Named in 1845 by Wilhelm Karl von Haidinger for the type locality at the Wolfbau Mine, Lölling District, Hüttenberger Erzberg, Hüttenberg, Friesach – Hüttenberg area, Carinthia, Austria.

Type Locality: Wolf mine, Lölling mining district, Hüttenberger Erzberg, Hüttenberg, Sankt Veit an der Glan District, Carinthia – Austria