Jordanite is a mineral formed from hydrothermal solutions that intermixed with the local country rock's chemistry to produce some exotic mineral species. In this case jordanite is the arsenic rich mineral and geocronite is the antimony rich mineral. Color is a lead gray to black. Luster is metallic. Crystals are opaque.
Cleavage is poor in one direction.
Hardness is 3. Streak is dark brown. Associated Minerals include lengenbachite , pyrite , bournonite , seligmannite , breithauptite , nisbite , costibite , arsenopyrite , gudmundite , meneghinite , sphalerite and dolomite . Best Field Indicators are crystal habit, locality, striations, associations and density.