Assertion: carnotite's presence | /r/HasProperty | secondary
Facets:
Source sentences:
text: The presence of gold in sandstones, limestones, etc., is secondary, as is also its presence in sea water, in which there is reported to be nearly a grain (about five cents worth) in every ton of water.
text: The presence of silver in sedimentary and metamorphic rocks, or even in sea water, is secondary.