The chemical formula of mineral Cadwaladerite is indicated by Al(OH)2Cl•4(H2O). This mineral is usually found in sulfate deposit, commonly embedded in halite. Mineral Cadwaladerite is most commonly found at its type of locality at the mine dumps at Cerro Pintados, 80 km southeast of Iquique, Tarapaca, Chile. Mineral Cadwaladerite was named for Charles Meigs Biddle Cadwalader, formerly President of the Academy of Natural Sciences, Philadelphia, Pennsylvania, USA.

Mineral Cadwaladerite has no cleavage display even if it is evaluated more closely under petrographic polarizing microscope used in the field of optical mineralogy.  Cadwaladerite is usually found in lemon color in hand sample. The specific gravity measure of the mineral is usually found 1.66 grams per cubic centimeters. Most crystals of mineral Cadwaladerite are found transparent in appearance. Mineral Cadwaladerite is usually found showing conchoidal fracture when viewed in polarizing microscope. This is usually developed in brittle materials characterized by smoothly curving surfaces. Mineral Cadwaladerite is most commonly found exhibiting vitreuos or glassy luster when viewed in reflected light of petrographic polarizing microscope used in the field of optical mineralogy. Mineral Cadwaladerite is an isotropic mineral. Cadwaladerite is a non-radioactive mineral as evaluated.