Dadsonite

General Information: Chemical Formula:Pb21Sb23S55Cl Composition:(Molecular Weight = 8,950.53 gm)Antimony 31.29 % SbLead 48.61 % PbSulfur 19.70 % S Chlorine 0.40 % Cl Empirical Formula: Pb21Sb23S55Cl IMA Status:Approved IMA 1969 Locality:Giant property, Yellowknife, NWT, Canada. Name Origin:Named for Alexander S. Dadson (1906-1958), Canadian mineralogist.Physical Properties: Color:lead gray or gray. Density:5.68 - 5.76, Average = 5.72 Diaphaniety:Opaque Habits:Fibrous - Crystals made up of fibers., , Hardness:2.5 - Finger Nail Luster:Metallic Streak:blackMore details...

Pb23Sb25S60Cl