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Dustin's Rocks and Minerals Crossword

Across
Solid material formed by nature in/on Earth's crust
How a mineral's surface reflects light
This rock is formed from cooled magma or lava
Has straight edges and flat sides
Layer of Earth made of liquid iron and nickel
A break along a rough or jagged surface
Down
Formed from existing rocks that have been squeezed and heated deep inside Earth's crust
Tiny pieces of rock, minerals, and decayed plants and animals
This can change if it contains impurities
Color of the mark made when scraped on tile
Air surrounding Earth
Thinnest and outer layer of Earth