Assertion: pure erbium | /r/HasProperty | reduced
Facets:
value: from a metallic salt
type: OTHER
value: chemically
type: MANNER
Source sentences:
text: Pure Erbium must be chemically reduced from a metallic salt which is extracted from the mineral ores in a complex, difficult, and potentially dangerous process involving sulfuric and hydrochloric acid and sodium hydroxide.
text: Pure Erbium must be chemically reduced from a metallic salt which is extracted from the mineral ores in a complex, difficult, and potentially dangerous process involving sulfuric acid.