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This chart is essential for all geologists. It allows classification of rock and sand grains based on size and provides a point of reference when working out in the field. It allows the geologist to classify based on a variety of properties such as size and shape, grain sorting, roundness, and sphericity of a sample.
The chart consists of several measurement indicators including sphericity/roundness measuring chart; printed examples of well-sorted and poorly-sorted grain samples in fine, medium, and coarse ranges; four actual grain samples illustrating angular, subangular, subrounded, and rounded shapes; six grain size samples: silt, very fine sand, fine sand, medium sand, coarse sand, and very coarse sand. It also includes measurement limits for granules, pebbles, cobbles and boulders (in order of size).
Gympie Office 07 5482 664937 Langton Rd Gympie QLD 4570
Perth Office 08 9302 570050 Mulgul Road, MALAGA WA 6090