Enter a clue or pattern or both:
The Clue
Aluminous mineral (10 letter answer)
The Answer
HORNBLENDE
Tags
Notes
The answer HORNBLENDE is so rare that it appears less than once every 2500 puzzles.
Related Clues
Amphibole
Definition
HORNBLENDE as a noun:
1. a green to black mineral of the amphibole group; consists of silicates of calcium and sodium and magnesium and iron