Assertion: granite's quartz | /r/CapableOf | precipitate as gangue
Facets:
value: chemically
type: MANNER
value: from hot hydrothermal veins
type: LOCATION
Source sentences:
text: While the majority of quartz crystallizes from molten magma, much quartz also chemically precipitates from hot hydrothermal veins as gangue, sometimes with ore minerals like gold, silver and copper.