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The major components of manganese nodules are todorokite with a tunnel-like structure and also buserite and birnessite with layered structures. 錳結(jié)核的主要礦物是具有隧道孔結(jié)構(gòu)的鈣錳礦以及具有層狀結(jié)構(gòu)的似水錳礦和水鈉錳礦。