According to a paper written by Hubertus Bardt, aluminum is not classified as critical when considering the reserves-to-production ratio, political implications, and supply risks . One reason for this is the various sources of aluminum. Naturally occurring aluminum is not usually found as a pure metal but rather in the form aluminum silicates. To produce the pure form of aluminum suitable for various applications, it must be extracted either from minerals like bauxite or via recycling from scrap. According to a study by Ostojic et al., one kilogram of pure aluminum can be extracted from 4 kg of bauxite . Additionally, the concentrations of aluminum in raw materials are twice that of the concentrations of lithium. Using this approximation, one can deduce that less soil needs to be displaced when mining aluminum than when mining the same mass of lithium. Furthermore, over twice the amount of aluminum atoms can be sourced from 1 kg of raw material as compared to lithium, underscoring the efficiency of using aluminum in batteries.