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Sand

sand
particles in siliciclastic sediment that range in size from 0.0625 millimetres (very fine-grained sand) to 2.0 millimetres (very coarse-grained sand), according to the udden-Wentworth scale. In field geology, to tell the difference between fine-grained sand and coarse silt, the particle in a rock is sand if it can be clearly seen with the naked eye.
Fortitude and determination; he didn’t have the guts to try it.


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