Feldspar
/fɛldspɑɹ/
"Feldspar" in a Sentence (3 examples)
Rocks take time to decompose, especially quartz and feldspar.
The tan color of most sand beaches is the result of iron oxide, which tints quartz a light brown, and feldspar, which is brown to tan in its original form.
Minerals such as quartz and feldspar are common in granite.