Assertion: polonium's particle | /r/CapableOf | play role
Facets:
value: in coloration changes within minerals
type: LOCATION
Source sentences:
text: Both Joly (1917) and Gentry (1992) discounted the possibility that beta particles may play a role in coloration changes within minerals; however, neither author gives a basis for this rejection beyond the erroneous statement that beta particle energies are too low to have any affect.