Assertion: boron | /r/HasProperty | obtained
Facets:
value: from food
type: OTHER
value: by heating the trioxide
type: MANNER
value: from environment
type: OTHER
value: primarily
type: DEGREE
value: from boron mines
type: LOCATION
Source sentences:
text: 2.1 Boron is primarily obtained from boron mines, located in arid regions of Turkey and the USA, and also in Argentina, Chile, Russia, China, and Peru.
text: Today, boron is obtained by heating borax (Na 2 B 4 O 7 ·10H 2 O) with carbon, although other methods are used if high-purity boron is required.
text: The impure or amorphous, boron, a brownish-black powder, can be obtained by heating the trioxide with magnesium powder.
text: Boron is an ultra – trace element that can be obtained from food and environment.