Across
- 5. naturally occuring, inorganic solid with a specific chemical composition and a definite crystalline structure
- 6. a geometric solid having four sides that are equilateral triangles
- 7. solid in which atoms are arranged in repeating patterns
- 9. measure of how easily a mineral can be scratched, which is determined by the arrangement of a mineral's atoms
- 11. rare, precious, highly prized mineral that can be cut, polished, and used for jewelry
- 12. color a mineral leaves when it is rubbed across an unglazed porcelain plate or when it is broken up and powdered
Down
- 1. the way that a mineral reflects light from its surface
- 2. mineral or rock that contains a valuable substance that can be mined at a profit
- 3. when a mineral breaks into pieces with arclike, rough or jagged edges
- 4. the manner in which a mineral breaks along planes where atomic bonding is weak (clean break)
- 8. mineral that contains silicon, oxygen, and usually one or more other elements
- 10. gravity ratio or the mass of a substance to the mass of an equal volume of H20 at 4 degree Celsius