Assertion: silicon's form | /r/Synonym | flint
Facets:
Source sentences:
text: Some poorly crystalline forms of quartz are also known, such as chalcedony, chrysoprase, carnelian, agate, onyx, jasper, heliotrope, and flint.
text: Silicon dioxide occurs in two forms: a crystalline form known as quartz and a noncrystalline form known as flint.