In this work, duplex ceramic coatings were deposited on Al 6061 alloy, using anodizing and micro plasma process (MPO) . MPO electrolyte was modified using hydroxyapatite and 15g/l rock additives rich with Calcium Carbonate (CaCo3).Phase composition of the coatings, microstructure, micro-hardness, topography, thickness, roughness, and wear resistance were evaluated by X-ray diffraction (XRD), (SEM), a Vickers indenter, AFM, and Microprocessor coating thickness meter, roughness test, and Microtest, respectively. Results showed that the samples coatings contained ?-alumina, and their thickness and hardness increased by the increasing of deposition time. The research demonstrates that a relatively hard, thick and uniform coatings with good wear resistance, can successfully be deposited on Al alloy using hydroxyapatite and 15g/l CaCo3 rock additives containing electrolytes as an natural rock additives.