This printable crossword puzzle on the topic of Rocks & Minerals has 10 clues. Answers range from 3 to 16 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
An inorganic substance formed in the Earth that has atoms arranged in a crystal lattice structure.
The quality or condition of being a strong.
A test used to figure out what mineral a substance is by scratching a rock on a pale tile.
The scale used to measure hardness.
A natural reserve of a mineral that contains a valuable element or substance.
The interaction between the rock and light.
The hardest mineral in the world, formed by pressure and made of carbon.
H20
H202
Number nine on the periodic table.