Assertion: manganese | /r/HasProperty | obtained
Facets:
value: from pyrolusite
type: LOCATION
value: from the combustion of this mineral
type: OTHER
value: from the minerals pyrolusite
type: OTHER
value: from romanechite
type: LOCATION
Source sentences:
text: It is obtained from the minerals pyrolusite (alpha-manganese dioxide) and romanechite.
text: Today, most manganese is still obtained from pyrolusite, although it is usually burned in an aluminum powder furnace or treated with sulphuric acid to form manganese sulphate, which is then electrolyzed.
text: Manganese comes from pyrolusite, so it can be obtained from the combustion of this mineral.
text: Today, most manganese is still obtained from pyrolusite, although it is usually burned in a furnace with powdered aluminum or is treated with sulfuric acid (H 2 SO 4 ) to form manganese sulfate (MnSO 4 ), which is then electrolyzed.
text: Most Manganese is obtained from ores in Australia, Brazil, Gabon, India, Russia, and South Africa.