Title: The synthesis of birnessite, cryptomelane, and some other oxides and hydroxides of manganese
Abstract:Summary Detailed methods are described for the laboratory preparation of the manganese minerals manganosite, hausmannite, manganite, partridgeite, birnessite, cryptomelane, pyrolusite, and todorokite....Summary Detailed methods are described for the laboratory preparation of the manganese minerals manganosite, hausmannite, manganite, partridgeite, birnessite, cryptomelane, pyrolusite, and todorokite. New data are presented on the conversion of birnessite to cryptomelane, and on the exchange properties of potassium in these two minerals. It was found that the upper limit of potassium in cryptomelane is about 7 % K, while the lower limit lies between 0·25 % and 2·2 % K.Read More
Publication Year: 1971
Publication Date: 1971-12-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 588
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