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Rocks and Minerals

Across
A way that the surface of a mineral reflects light.
A mineral's ability to resist being scratched.
A rock formed by layers of sediments squeezed and stuck together over a long period of time.
The process by which rocks are broken down into smaller pieces.
A rock that forms when completely melted rock hardens
Down
The color of the powder left behind when you rub a mineral against a white tile called a streak plate.
The process by which wind and moving water carry away bits of rock.
The slow, never-ending process of rock changes.
A natural, solid material with particles arranged in a repeating pattern.
A rock changed by heat or pressure, but not completely melted.
A material made up of one or more minerals.