psi·lom·e·lane (s -l m  -l n )n. A mixture of black manganese oxide minerals. [Greek ps los, bare + Greek mels, melan-, black.] |
psilomelane [sɪˈlɒmɪˌleɪn]
n
(Earth Sciences / Minerals) a common black to grey secondary mineral consisting of hydrated basic oxide of manganese and barium: a source of manganese. Formula: BaMn9O16(OH)4 also called romanechite
[from Greek psilos bare + melas black]
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. | psilomelane - a mineral consisting of hydrated basic oxide of manganese and barium; a source of manganese atomic number 25, manganese, Mn - a hard brittle grey polyvalent metallic element that resembles iron but is not magnetic; used in making steel; occurs in many minerals mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition |
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