romanechite वाक्य
"romanechite" हिंदी में romanechite in a sentenceउदाहरण वाक्य
- "' Psilomelane "'is a group name for hard black manganese oxides including hollandite and romanechite.
- It occurs in mixtures with " psilomelane " ( recently renamed to romanechite ) and with other manganese oxides in an iron oxide deposit, most likely bacterially altered from a previous mineral in the Akhtensk deposit.