Assertion: moonstone | /r/HasProperty | a type of feldspar
Facets:
Source sentences:
text: Moonstones are a type of feldspar, the most plentiful mineral on earth, a mixture of silica and aluminum which makes up more than half of the Earth's crust.
text: Moonstone is a type of feldspar.
text: Moonstones are a type of feldspar, the most plentiful mineral on earth, a mixture of silica and aluminum which makes up more than half of the Earth's crust.
text: Moonstone is a type of feldspar.