Assertion: osmium | /r/HasProperty | pure radiogenic osmium-187
Facets:
value: practically
type: MANNER
Source sentences:
text: The rhenium–osmium ratio in most minerals is too low to be of general use as a dating technique, but molybdenite (molybdenum disulfide, MoS 2 ) has a very high ratio of rhenium to osmium; and workers have found that the osmium in molybdenite is practically pure radiogenic osmium-187.