Abstract:

 Observations of mineral composition and microtexture of the mafic microgranular enclaves (MMEs) from different granite bodies in SE China demonstrated that no matter what mineral, rockforming or accessory, two generations of the mineral were found coexisting in all samples of the MMEs. Most of the MMEs were not with igneous texture, as they were generally considered, but with the melting texture. Multitypes of textures coexisted in the same enclave suggested that the MMEs should have been derived from the residues of partial melting of rocks. Differences of mineral composition and microtexture between MMEs or between core and rim of one MME suggested a varying melting degree of source rocks, implying that the MMEs were in different evolution stages in magma.

Key words:  granite, mafic microgranular enclave(MME), mineral composition, microtexture