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自然银和含银铁-金合金见于辽宁复县50号金伯利岩岩管和山东蒙阴胜利1号金伯利岩岩管金刚石中.此二岩管金伯利岩均位于奥陶纪,分别起源于200和220km,其金刚石品位系中国目前所见原生矿中最高者.
Natural silver and silver-containing iron - gold alloy found in No. 50 Fu County, Liaoning Province kimberlite rock tube and Shandong, Shandong Province, No. 1 Kimberley rock tube diamond in the rock.The two kimberlite kimberlite are located in Ordovician, respectively, originated in 200 and 220km, the diamond grade is the highest among the primary mines in China.