Assertion: opal | /r/AtLocation | cavity
Facets:
value: in volcanic rocks
type: LOCATION
value: at tintenbar
type: LOCATION
value: at dubbo
type: LOCATION
value: usually
type: DEGREE
value: at new south wales
type: LOCATION
Source sentences:
text: Opal is also found in cavities in volcanic rocks at Tintenbar and Dubbo, New South Wales, and in thunder eggs within a rhyolite flow at Mullumbimby.
text: Opal is also usually found in cavities from volcanic rocks mostly at Dubbo and Tintenbar.