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Science Department

Rock Identification

Rock Key

Click on the name of a rock to view more information about it.

Typical sizes of sedimentary grains:

RockGrain Size
Pebbles4 to 64 mm
Grit2 to 4 mm
Sand0.06 to 2 mm
Mud / Silt0.004 to 0.06 mm

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Copyright © 2007 - 2016, Brooke Weston Academy. All rights reserved.
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