The Darai–Daldali plateau preserves well developed laterite type bauxite deposits as a result of in-situ weathering of basaltic rocks (Deccan Traps). The bauxite ore is essentially composed of gibbsite and boehmite in subordinate amount, along with anatase and brookite as accessory minerals. Kaolinite, goethite, hematite, ilmenite, gibbsite and brookite are found in lateritic bauxite and laterite samples in variable amounts. SiO₂–Al₂O₃–Fe₂O₃ diagram illustrates strong bauxitization resulting from desilication in the early stage. The disilication was followed by bauxitization and deferruginization at late stages as a result of reducing and oxidizing conditions, respectively, due to fluctuating water table, which is evidently supported by A–L–F plot. Progressive loss/gain in FMTE, LILE, HFSE and REE during bauxitization process of basalt through lateritic bauxite facies is observed. La/Y varying from 1.17 to 4.11 suggests prevalence of alkaline conditions. Positive Eu/Eu* anomaly in these samples is suggestive of colloidal precipitation of gibbsite from pore water of lateritic residuum. Mass increase of Ce in laterite samples further supports to its sorption on goethite and hematite mineral phases.

由于玄武岩原位风化（Deccan Traps），Darai-Daldali高原保留了发育良好的红土型铝土矿床。铝土矿基本上由次要量的三水铝石和勃姆石，以及作为辅助矿物的锐钛矿和板钛矿组成。在红土铝土矿和红土样品中发现了不同数量的高岭石，针铁矿，赤铁矿，钛铁矿，菱镁矿和板钛矿。SiO ₂ –Al ₂ O ₃ –Fe ₂ O ₃该图说明了早期脱硅导致的强铝化作用。由于地下水位波动，分别在还原和氧化条件下，在后期进行了脱铝，铝土矿化和去铁素化，这​​显然是由A–L–F图支持的。观察到玄武岩通过红土铝土矿相的铝土矿化过程中FMTE，LILE，HFSE和REE的逐步损失/增益。La / Y在1.17到4.11之间变化，表明碱性条件普遍存在。这些样品中的Eu / Eu *异常为正值，表明胶体从红土残渣的孔水中沉淀出来。红土样品中铈的质量增加进一步支持了其在针铁矿和赤铁矿矿物相上的吸附。