PARTICLE SIZE
Gravel and coarse sand particles can
be seen with the naked eye, fine sands with difficulty. Silt and
clay particles cannot be seen with the naked eye (but this is a
positive identification.
FEEL
Most sands feel sharp and gritty
when rubbed between the fingers.
Moisten fingers - dab in clay and
silt. Clay becomes sticky, dries flaky and is hard to remove when
dry. Silt feels smooth, not sticky, dries powdery and dusts off
easily.
SETTLEMENT TEST
Half fill the jar with fine soil, then fill with
distilled water and shake the bottle well, then leave
to settle out. See times below.
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