Class : Sulfides and sulfosalts
    Subclass : Sulfosalts
    Crystal system : Triclinic
    Chemistry : Pb₂₃Sb₂₅S₆₀Cl
    Rarity : Rare

Dadsonite is a rare sulfosalt of lead and antimony. It forms in hydrothermal veins where it associates with other lead sulfides and sulphosalts (jamesonite, bournonite, boulangerite, chalcostibite, zinkenite, etc...). It was named in honor of the geologist and mineralogist Alexander Stewart Dadson who made important contributions to the mining development of the Yellowknife gold mine (Canada). Dadsonite is opaque and only develops small fibrous or acicular crystals measuring a few millimeters long streaked parallel to the elongation. These crystals are mainly grouped in aggregates resembling "steel wool" with a lead gray color and a metallic luster.

Main photo : Dadsonite from St-Pons, Barcelonnette, Alpes-de-Haute-Provence, France

Many twins are known but not visible to the naked eye.

No fakes listed for this mineral species.