Assertion: periclase's amount | /r/HasProperty | evident
Facets:
value: in samples
type: LOCATION
Source sentences:
text: As is evident in samples 12-15, a significant amount of the Magnesium oxide (MgO) failed to take part in the main reaction and instead generated a significant amount of a reaction by-product of a mineral identified as Brucite, (Mg(OH) 2 ), which was not present in the other samples.