Formula: Na4Mn14O27.21H2O (?)
Hydrated oxide
Environments
Stream beds and hot spring deposits
Buserite is an unstable manganese oxide that dehydrates to birnessite.
It has been found in stream beds, in a hot spring deposit, deposited from
rhodochrosite mine wastewater and possibly also in deep sea
manganese nodules
(Mindat).
Localities
The original material was reported from the Yuno-Taki waterfall, Me-akan volcano, Akan National Park, Kushiro
Province, Hokkaido Island, Japan
(Mindat).
At Pinal Creek, Arizona, USA, it is suggested that the birnessite or
ranciéite and todorokite
found in the creek crusts may be transformation products of a buserite precursor
(AM 87.580-591).
Todorokite is considered to be amixture of buserite and its
breakdown products birnessite and
manganite
(AM 68.972-980).
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