L300 Granulometer

Six vials containing unlithified terrigenous sediments of different grain sizes. These are:

	grain size (mm)	grain size (phi)
Very coarse sand	1-2	-1-0
Coarse sand	0.5-1	0-1
Medium sand	0.25-0.5	1-2
Fine sand	0.125-0.25	2-3
Very fine sand	0.063-0.125	3-4
Mud	<0.063	>4

These are not sections cut from a rock. They are cut from a block of resin containing sedimentary grains. Use these sections to familiarise yourself with grain sizes, as seen in thin-section.

granulometer