braunite
Noun
Meaning
A native oxide of manganese, of dark brownish black color. It was named from a Mr. Braun of Gotha.
Source: Webster's dictionarySynonyms
manganite
grossular
andradite
hausmannite
hedenbergite
alabandite
hollandite
jacobsite
kutnohorite
caryopilite
birnessite
bixbyite
manganosite
manganotantalite
cryptomelane
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