Carlosruizite is a sulfate or selenate - iodate mineral with chemical formula: K₆(Na,K)₄Na₆Mg₁₀(SeO₄)₁₂(IO₃)₁₂·12H₂O. It has a low density (specific gravity of 3.36), colorless to pale yellow, transparent mineral which crystallizes in the trigonal crystal system. It forms a series with fuenzalidaite.