Aluminum pigment, process for production thereof, and metallic coating composition based on water containing the aluminum pigment

Aluminum pigment comprising an aluminum particle having a sobrela formed film surface thereof, wherein said film contains a metallic amine salt, and said metallic amine salt is represented by the compositional formula RmHnN + -OM (> = O) 2-OH (laque m represents a metal element, R represents a hydrocarbon chain tieneopcionalmente a substituent, m represents an integer of 1 or more, n represents aNumber integer satisfying n> = 4 - m).