Assertion: meteorite's metal | /r/AtLocation | earth
Facets:
value: in the form of oxides
type: OTHER
value: naturally
type: MANNER
value: very rarely
type: DEGREE
Source sentences:
text: Iron meteorites also contain a relatively high percentage of nickel - a metal very rarely found on Earth - and they display a unique feature that is never seen in terrestrial material.
text: Their extraterrestrial origin is obvious when we bear in mind that iron and most other metals naturally occur on the earth in the form of oxides rather than in the pure metallic state.