黑色岩系中贵金属富集层的成因:来自固定铵的佐证

THE ORIGIN OF METAL-ENRICHED LAYER IN THE BLACK ROCK SERIES

对湘黔地区（遵义、大庸）下寒武统牛蹄塘组黑色岩系的部分样品进行了Au、Ag、PGE、固定铵的分析，综合前人的资料进行了数据的对比和讨论，首次应用其中的固定铵来讨论了贵金属富集层的成因。

The Lower Cambrian black shales in the Zunyi (Guizhou Province) and Dayong (Hunan Province) areas, are rich in Ni, Mo, An, Ag, and PGE. The fixed ammonium in some samples from these areas has been determined for the first time in our work, and the relationship between fixed ammonium, and Au, Ag and PGE is discussed.