Assertion: precious opal | /r/HasProperty | hosted
Facets:
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.
text: The precious opal is hosted and found within a subsurface horizon or zone of bentonite in-place which is considered a “lode” deposit.