Rocks & Minerals Crossword

Naturally occurring substances that are neither plants or animals. The building blocks of rocks.
A ___________ mineral can be scratched by a fingernail, a copper penny AND an iron nail
A rock that is formed from hot, molten rock material that has cooled & hardened
Rocks that look like they've been glued into a clump
Age expressed by words like older, oldest, younger, youngest to compare its age with another thing
A rock that has been changed by heat, pressure or both
A never-ending process by which rocks are changed from one type to another
Any trace, mark, or remains of an organism at least 10,000 years old
Most _________________ are formed of materials deposited in the oceans
____________________ is a type of metamorphic rock
A person who studies rocks