Rocks and Minerals Crossword

This printable crossword puzzle on the topic of Rocks & Minerals has 16 clues. Answers range from 4 to 11 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.

substance that cannot be broken down into simpler substances
Smallest particle of matter that contains the characteristics of an element
Central region; contains protons and neutrons
positive charge
neutral charge
negative charge
Not a useful property of minerals
color of a mineral in its powdered form
how light is reflected from the surface
visible expression of a mineral’s internal arrangement of atoms
measure of the resistance of a mineral being scratched
standard hardness scale 1 (softest) – 10 (hardest)
tendency to cleave, or break, along flat, even surfaces
uneven break of a mineral
any solid mass of mineral or mineral-like matter that occurs naturally as a part of our planet
continuous process that causes rocks to change