Micro-analysis results concerning a metal specimen of Krasnojarsk meteorite (pallasite) are reported and referred to optical and electron micrographs. Evidence is given for $\alpha$ phase nucleation taking place at metal/silicate boundary resulting in poor Ni exchange between $\alpha$ and $\gamma$ phases; the consequent excess of Ni in taenite is consumed by large schreibersite grains formed around 400°C.