1) Barium mineral 2) Oxide mineral
Found on
https://www.crosswordclues.com/clue/romanèchite
Romanèchite ((Ba,H2O)2(Mn+4,Mn+3)5O10) is the primary constituent of psilomelane, which is a mixture of minerals. Most psilomelane is not pure romanechite, so it is incorrect to consider them synonyms. Romanèchite is a valuable ore of manganese, which is used in steelmaking. It has a monoclinic crystal structure, a hardness of 6 and a specific g...
Found on
http://en.wikipedia.org/wiki/Romanèchite
barium and manganese oxide [(Ba, H2O)2(Mn4+, Mn3+)5O10], an important ore mineral of manganese. A secondary mineral formed under surface conditions, ...
Found on
http://www.britannica.com/eb/a-z/r/64
No exact match found.
