Assertion: osmium's abundance | /r/HasProperty | variable
Facets:
Source sentences:
text: As the abundance of palladium in upper mantle rocks is so variable, we have chosen to calculate the average upper mantle palladium content from the H-chondrite Pd/Ir ratio of 1.022±0.097 (Morgan et al., 1985), as H-chondrite fit with osmium isotopes of Earth’s mantle rocks as explained above (see Table 4 and explanations).