Assertion: cassiterite's iron | /r/HasProperty | formed
Facets:
Source sentences:
text: If only a small amount of this buffering pyrrhotite is present, practical considerations may cause enough hydrogen to be used to overcome the margin of safety which the pyrrhotite 2 affords and cause metallic iron to be formed: FeS+H2->Fe+H2S which will then quickly alloy with any tin