Analysis of manganese deposits from the Alps

Deposits with unusually high Mn contents sampled at Monte Mangart in the Julian Alps include organic-rich marlstone and black shale with interbedded manganoan and siliceous...在尤利安阿尔卑斯山脉曼加尔特山采集的锰（Mn）含量异常偏高的沉积样品，包含富有机质泥灰岩，以及夹有互层锰质与硅质组分的黑色页岩……