  The emergence of biomolecular homochirality is a critically important
question about life phenomenon and the origins of life. In a previous paper
(arXiv:1309.1229), I tentatively put forward a new hypothesis that the
emergence of a single chiral form of biomolecules in living organisms is
specifically determined by the electron spin state during their
enzyme-catalyzed synthesis processes. However, how a homochirality world of
biomolecules could have formed in the absence of enzymatic networks before the
origins of life remains unanswered. Here I discussed the electron spin
properties in Fe3S4, ZnS, and transition metal doped dilute magnetic ZnS, and
their possible roles in the prebiotic synthesis of chiral molecules. Since the
existence of these minerals in hydrothermal vent systems is matter of fact, the
suggested prebiotic inorganic-organic reaction model, if can be experimentally
demonstrated, may help explain where and how life originated on early Earth.
