Laboratory Methods. Direct methods ($$$$$$)XRD (all crystalline minerals)Infrared spectroscopy (mainly kaolinite)Thermal analysis (DTA) ? mainly kaolinite, gibbsite)Indirect methodsAtterberg TestsCOLEBulk Density/KsatCEC. DIRECT METHODS. XRD. Describe the testDefine the resultsPicture of DiffractogramMineral IDQuantify resultsPros and ConsDirect measurement of mineralsCostTimeSensitivity (approx 10%) ? exactly where cut is in taxonomySemi-quantitative (approx. 10-20%).
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