Incongruent Batch Melting

During partial melting of the crust and the mantle, some minerals melt congruently and others melt incongruently. Melting of congruent minerals only produces melt, and such a process can be expressed as 

By comparison, melting of incongruent minerals produces not only melt but also minerals, and such a melting reaction process can be expressed as 

As another example, at 10 kbar, melting of a spinel peridotite has the following melting reaction in mass units (Kinzler and Grove, 1992) 

In fact, a source rock often contains both congruent minerals and incongruent minerals, therefore, a general melting equation is 

For a general naelting reaction in Eq. (1.33), the degree of partial melting (F) is the mass fraction of the total melt (L + ) relative to the 

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Incongruent batch melting with linear change of K ... 

Incongruent Batch Melting Incongruent BM w/constant K Incongruent BM w/ linear K Incongruent BM w/ linear K and linear q ... 

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