Assertion: precious opal | /r/AtLocation | situ
Facets:
value: within zone of bentonite
type: LOCATION
value: within a subsurface horizon
type: LOCATION
Source sentences:
text: The precious opal is hosted and found in situ within a subsurface horizon or zone of bentonite, which is considered a "lode" deposit.
text: The precious opal is hosted and found in situ within a subsurface horizon or zone of bentonite, which is considered a "lode" deposit.