【摘要】 本文从地球化学角度研究并探讨大洋锰结核中锰矿物化学组分间的相关性。用三组分图，结合显微镜下观察，初步确定不同成因锰矿物的Ｍｎ／Ｆｅ值：原生δ－ＭｎＯ２，２－２．５；次生致密带的次生δ－ＭｎＯ２，１－２；重结晶形成的钡镁锰矿和钠水锰矿，＞５；由于结核中的物质再分配和后生作用形成富Ｎｉ、Ｃｕ非晶质铁锰氧化物的Ｍｎ／Ｆｅ值亦大于５。更多还原

【Abstract】 chemical composition data for manganese minerals in marine manganese nodules are available. As viewed from the three-component diagrams of manganese minerals of known occurrences, Mn/Fe ratios in the minerals formed at different stages are: δ-MnO2, Mn/Fe=2-2.5 for primary minerals, δ-MnO2, Mn/Fe=1-2 for secondary ones, Mn/Fe>5 for todorokite and birnessite, formed from recrystallization, and Mn/Fe>5, for Ni,Cu-rich amorphous Mn-Fe hydroxide formed as a result of re-distribution of material in nodules and deuterogenesis. Differences are noticed in correlation between trace elements and Mn, Fe in different manganese minerals.For example, in δ-MnO2 Ni and Cu are positively correlated with Mn, but negatively with Fe, and in todorokite Ni and Cu are weakly negatively correlated with Mn and Fe. This shows that in different minerals Ni and Cu are associated with Mn and Fe in different manners.更多还原