Assertion: manganese | /r/HasProperty | burned in furnace
Facets:
value: usually
type: TEMPORAL
value: with powdered aluminum
type: OTHER
Source sentences:
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.