
CA N 'T SE E IT - DO E S N 'T ME A N WE DO N 'T HA V E IT - PLEASE ASK www.strength.com.au - 13 - Pocket-sized folder enables the field geologist to quickly and accurately identify grain size and shape, grain sorting, roundness, and sphericity of a sample. Consists of 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. Measurement limits for granules, pebbles, cobbles, and boulders indicated. Folder is approximately 10mm x 80mm closed. A handy set of 8 white flexible plastic cards printed with the following information. Geological time scale Drill sample logging aid Class of sedimentary rock Class of igneous rock Class of volcanic rock Class of plutonic rock Periodic table of elements/metamorphic facies Geotechnical card – SPT’s rock strengths