High Quality Content by WIKIPEDIA articles! Todorokite is a rare complex hydrous manganese oxide mineral with formula (Mn,Mg,Ca,Ba,K,Na) 2Mn3O12·3H2O. It is a brown to black monoclinic mineral which occurs in massive or tuberose forms. It is quite soft with a Mohs hardness of 1.5, and has a specific gravity of 3.49 – 3.82. It was discovered in 1934 in the Todoroki mine, Hokkaid?, Japan. It is a component of deep ocean basin manganese nodules.

Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.