Cryptomelane
锰钡矿(Hollandite)、锰钾矿(Cryptomelane)及铅硬锰矿(Coronadite):这些 矿物均属“Ct—Mn02”族,其结晶外貌有如针状,在构造中含有大量的外来阳离子, 因而有不用矿物...
naturally occurring cryptomelane ; Natural cryptomelane
矿物 Cryptomelane
supergene k-mn oxides