Evaluation of the lithium resource in the Smackover Formation...

Evaluation of the lithium resource in the Smackover Formation brines of southern Arkansas using machine learning
https://www.science.org/doi/10.1126/sciadv.adp8149

"The top five most important explanatory variables for predicting lithium were dissolved hydrogen sulfide (H2S) concentrations in Smackover Formation brines, depth of brine sample, altitude of the top of the Smackover Formation, whether a brine sample was collected from the Smackover Formation or another geologic unit, and thickness of the Smackover Formation (Fig. 4)."

"Shapley additive explanation (SHAP) values do provide an explanation that as H2S increases, predicted lithium concentration increases"



From Standard Lithium's PFS, in reference to lithium concentration:

"In general, the concentration of these elements is greater and more heterogeneousin hydrogen sulfide (H2S)-rich brine than in H2S-free brine (see the H2S-richpolygon shown in Figure 6-3)."



Our closest peer, EMP Metals. From 20:58 he talks about other oilfield brine projects like Smackover requiring large scale production off the bat to deal with the contaminants like hydrogen sulfide that are absent in Duperow brine. And that 20-40% of Capex and Opex could come just from removal of those contaminants.



From AZL drilling announcement: