Assertion: germanium | /r/HasProperty | obtained
Facets:
value: from zinc ores
type: OTHER
value: from their oxides
type: OTHER
value: primarily
type: DEGREE
value: by heating the oxide
type: MANNER
value: from the smelting of zinc ores
type: LOCATION
Source sentences:
text: Most germanium today is obtained from zinc ores.
text: Germanium is obtained from two mines in the United States.
text: Most germanium today is obtained from zinc ores.
text: Germanium is obtained from two mines in the United States.
text: Today, germanium is primarily obtained from the smelting of zinc ores and is recovered from certain types of coal ash in Russia and China.
text: Silicon and germanium are obtained from their oxides by heating the oxide with carbon or hydrogen: SiO 2