Assertion: boron | /r/HasProperty | rare
Facets:
value: relatively
type: DEGREE
value: in the earth's crust
type: LOCATION
value: in stars
type: LOCATION
value: in solar system
type: LOCATION
value: in the universe
type: LOCATION
Source sentences:
text: Boron is rare in the Universe and solar system due to trace formation in the Big Bang and in stars.
text: Boron is considered to be a rare element as it is not abundantly present on the earth.
text: Boron is a rare non-metallic element, which has several forms.
text: It is relatively rare and never appears on Earth in its pure form.
text: Boron is fairly rare, comprising of only about .001 percent of the Earth’s crust.
text: 1. a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder Familiarity information: BORON used as a noun is very rare.
text: Although boron is a relatively rare element in the Earth's crust, representing only 0.001% of the crust mass, it can be highly concentrated by the action of water, in which many borates are soluble.