Betekhtinite
Formula: Pb2(Cu,Fe)22-24S15
Species: Sulfides
Colour: Black
Lustre: Metallic
Hardness: 3 – 3½
Specific Gravity: 5.96 – 6.05
Crystal System: Orthorhombic
Name: Named in honor of Anatolii Georgievich Betekhtin (1897-1962), mineralogist and economic geologist.
Co-Type Localities: Fortschritt-Schacht I (Wolf-Schacht), Volkstedt, Eisleben, Mansfeld-Südharz, Saxony-Anhalt, Germany. Ernst-Thälmann-Schacht (Vitzthum-Schacht), Hübitz, Siersleben, Gerbstedt, Mansfeld-Südharz, Saxony-Anhalt – Germany