Assertion: iridium | /r/AtLocation | high concentrations
Facets:
value: in space
type: LOCATION
value: anomalously
type: DEGREE
Source sentences:
text: Iridium is a very rare element in the Earth's crust, but is found in anomalously high concentrations (around 100 times greater than normal) in a thin worldwide layer of clay marking the boundary between the Cretaceous and Paleogene periods, 66 million years ago.
text: Iridium is also found in high concentrations in space.