Assertion: silicon's form | /r/HasProperty | silicate
Facets:
Source sentences:
text: Other than silicon dioxide, the most common forms of silicon in nature are silicates, compounds that contain silicon, oxygen, and other elements such as magnesium, aluminum, calcium, and phosphorus.
text: It occurs in clay, feldspar, granite, quartz and sand, mainly in the form of silicon dioxide (also known as silica) and silicates (compounds containing silicon, oxygen and metals).