“…Volcanic soils constitute one of the most widely distributed groups in the world, especially in the Central and South American zones, Pacific Ocean islands, and the Caribbean, Africa, and Indonesia [9]. Thus, authors such as Bommer et al [9], Crosta et al [10], Gonzalez de Vallejo et al [11], del Potro and Hürlimann [12], and Brandes and Nakayama [13] have presented various detailed surveys on volcanic soils at the international level, in which they present the different characteristics of these soils, focusing mainly on their basic properties, soil classification, compression and strength properties. However, studies carried out by researchers such as Hürlimann et al [14], Moon et al [15], Avşar et al [16], and Okewale and Coop [17], in addition to the abovementioned properties, also include mineralogy and microstructure analyses.…”