This printable crossword puzzle on the topic of Rocks & Minerals has 12 clues. Answers range from 4 to 9 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
1,400 miles thick
760 miles thick
Made of different types of minerals
2nd layer to top
Definite shape and volume
Slow Cooling: _______ crystal
Fast Cooling: _______ crystal
Mass divided by Volume
Breaks into a long flat surface
Breaks into irregular surfaces
Hardest mineral
Softest mineral