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alteration facies contact

definition A metasomatic facies contact separating rocks that have undergone alteration of a particular facies from those that have undergone metasomatism of another facies. Alteration is a kind of metasomatism that does not introduce economically important minerals. more like this
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Resource original
Concept original
broader original
narrower alteration_facies_contact original
in scheme contacttype original
is primary topic of alteration_facies_contact