Assertion: carnotite | /r/MadeOf | radium
Facets:
Source sentences:
text: In the late nineteenth century, European scientists discovered that carnotite contained vanadium, radium, and uranium—all of which had various applications in medicine, industry, and arms production.
text: The area’s role as a provider of raw material for nuclear science began when it was discovered that carnotite, a red and yellow mineral found on the Colorado Plateau, contains radium.