CGS Sand Grain Sizing Folder

The CGS Sand Grain Sizing Folder is a valuable tool for geologists and field technicians to quickly and accurately identify the size, shape, sorting, roundness, and sphericity of sand grains in the field.

This pocket-sized folder contains visual aids and reference materials to help users classify sand samples according to the Wentworth Grade Scale.  

Key Features:

• Six Sand Grain Sizes: Includes actual samples of silt, very fine sand, fine sand, medium sand, coarse sand, and very coarse sand.  
• Shape Examples: Features four actual grain samples illustrating angular, subangular, subrounded, and rounded shapes.  
• Sorting Examples: Provides printed examples of well-sorted and poorly-sorted grain samples in fine, medium, and coarse ranges.  
• Sphericity and Roundness Chart: Includes a chart for measuring the sphericity and roundness of grains.  
• Measurement Limits: Indicates the measurement limits for granules, pebbles, cobbles, and boulders.
• Pocket-Sized Design: Convenient for field use and easy to carry.