RE:RE:RE:30 samples ranged from 411 to 2590ppm lithium! Smictite is a group of 15 clays of which hectorite (Li-bearing). the Lab did not identify hectorite in the samples, suggests that the Lithium is simply free that got lift behind during evaporation of fluids. This suggests a brine source which is way cheaper to get than getting it from Lithium bearing (hectorite).