Assertion: actinium | /r/AtLocation | low concentrations
Facets:
value: extremely
type: DEGREE
value: in uranium ores
type: LOCATION
Source sentences:
text: Actinium is found in extremely low concentrations in uranium ores; but actinium can be obtained also as an artificial element by the irradiation of radium:
text: Actinium is found in extremely low concentrations in uranium ores; but actinium can be obtained also as an artificial element by the irradiation of radium: 226Ra(n,gamma)227Ac.
text: Actinium is found in extremely low concentrations in uranium ores; but actinium can be obtained also as an artificial element by the irradiation of radium: 226Ra(n,gamma)227Ac.