Enter a clue or pattern or both:
The Clue
Rock-forming mineral (8 letter answer)
The Answer
FELDSPAR
Tags
Notes
The answer FELDSPAR is so rare that it appears less than once every 2900 puzzles.
Related Clues
Crystalline mineral
Igneous rock constituent
Mineral that crystallizes from magma
Important constituent of igneous rocks
Definition
FELDSPAR as a noun:
1. (feldspar, felspar) = any of a group of hard crystalline minerals that consist of aluminum silicates of potassium or sodium or calcium or barium