Assertion: granite | /r/MadeOf | quartz
Facets:
value: as its main mineral makeup
type: OTHER
Source sentences:
text: It is a very hard igneous rock containing quartz, mica and feldspar as its main mineral makeup.
text: Granite is a natural material that contains quartz (and a whole other mix of materials that have accumulated over eons of time).
text: Its structure is crystalline, and it contains quartz, mica, and feldspar minerals.
text: Granite also contains quartz, the second most abundant rock-forming mineral after feldspar.