The albite granite occurs at the top of the cumulates in Dazhu Area. It's a greyish white and fined-grained rock, consisting mainly of albite (An 1 and quartz with only minor amounts of ferromagnesium mineral and myrmekite. The albite granite can be distinguished from other granites by the absence of potash feldspar. It exhibits granitic texture and is characterized chemically by higher Si02, Na2O and extremely low K20. The REE pattern of the albite granite is depleted in LREE as those of the plagiogranite of Troodos. From the dunite at the bottom to the albite granite at the top of cumu- later, the contents of SiO2, Na2O, Ti02 increase and (Fe0>，Mg0 decrease grad- ually. The (Fe0 > /Mg0 ratio of cumulates also increase noticeably from 0. 23 to 3.33. Meanwhile, the REE abundance of the albite granite is highest, being more than 18 times over those of chondrite, and that of the cumulus dunite is all lower than those of chondrite. All of these gradual variations of the cu- mulus sequence indicate the trend of the magmatic differentiation. Therefore. the albite granite represents the final differentiation product of a tholeiitic magma.