Abstract Liquid immiscibility has become the preferred mode of genesis for carbonatite rocks, which commonly, but not exclusively, accompany silicate rocks in alkaline-rock complexes. This concept been universally based on presumption that nephelinitic and phonolitic magmas can evolve to a stage where two conjugate immiscible liquids separate. It is assumed these separate quickly, or even insta...

We review evidence concerning the basis for tissue segregation during embryonic development. This compartmentalization is shown to be an immiscibility phenomenon caused by changes in the strengths of adhesions between mobile cells which accompany their differentiation and generate interfacial tensions at cell population boundaries. The mobile cells exchange neighbors in response to these adhesi...

Studies of three selected sulfide-silicate assemblages from ore samples from the Sar Cheshmeh porphyry copper deposit led to some ore genetic conclusions. The presence of chalcopyrite blebs in the groundmass orthoclase and quartz from the stock suggests liquid immiscibility in a cooling late-magmatic melt. This is in favor of the orthomagmatic model proposed for porphyry copper deposits. Th...