The Detiangou gold deposit in Beijing is of gold-pyrite-polymetallic sulfide quartz vein type, generally controlled by ductile shear zones adjacent to the ore-control fault zone (F1 ). Tellurium in the ores has been economically concentrated. Lots of interesting minerals have been discovered, such as tellurium-bearing minerals like altaite, petzite, volynskite, hessite and tellurbismuth, binary tellurides like sylvanite, stuetzite,unnamed minerals like AgS1+ x Te1-x (x= 0. 09-0. 58 ) (M1 ), (Au0. 92 Ag0. 98 ) (Te3. 75 S0.25 ) (M2 ), (Au0. 71Ag0.44 ) (Te1.83S0. 17 ) (M2 ), (Ag0.74Pb0. 80 ) (S1.61Te0. 39 ) (M3 ), and PbS1.18Te0. 82 (M4 ), and native tellurium. The paragenetic sequence of telluride minerals might be divided into three stages: (1)altaite + petzite + volynskite + hessite + tellurbismuth ; (2) sylvanite + stuetzite ( + Native tellurium), and (3 ) M1 + M2 + M3 + M4 + native tellurium, fTe2 of the oreforming fluid was increasing in the process of Te-Au-Ag mineralization