Abstract
It is shown that diamond formation can be associated with the manifestation of the thermohydraulic effect, the explosive water reaction to the impulse action of ultrahigh temperatures (kimberlite magmas). The process simultaneously destroys the “old” diamonds and creates the “new” ones, with possible synthesis and preservation of idiomorphic diamond crystals. The issues of the process occurrence in natural conditions are considered. The general pattern in diamond deposits distribution is noted, which is their preferable confinement to non-magnetic and weakly magnetic fields of the Earth’s crust; these fields are characterized by a reducing environment favorable for diamonds and other minerals formation.
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