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最近在大别山北坡霍山铙钹寨等地的超基性岩中发现了石榴辉石岩的包体．石榴辉石岩草绿色致密块状，呈分米级的块体出现于蛇纹石化强烈的橄榄岩中．主要矿物组成是：石榴子石（Ｐｒｐ ２５－３５），钠质普通辉石（Ｊｄ１０－２５）和少量的钛铁矿．有相当显著的退变质现象，退变质有两期：麻粒岩相矿物组合，明显地被角闪岩相所切割．石榴辉石岩的寄主岩是尖晶石橄榄岩类．包括尖晶石方辉橄榄岩和尖晶石二辉橄榄岩，由于强烈的蛇纹石化，残余的橄榄石（Ｆｏ９２－９３）仅占５％－４０％，斜方辉石富镁（Ｅｎ８７－９３）并有解理弯曲等韧性变形现象．采用Ｅｌｌｉｓ和Ｇｒｅｅｎ（１９７９）及Ｋｒｏｇｈ（１９８８）石榴子石单斜辉石Ｆｅ－Ｍｇ交换平衡温度计，计算出石榴辉石岩的Ｆｅ－Ｍｇ分配系数（ＫＤ）为４．０６－５．２８．温度Ｔ＝ ７９３°－９１９℃，估算压力 Ｐ＝１．５ ＧＰａ．可以推测该橄榄岩体是从深度约 ６０ ｋｍ的地慢，固态侵位于下地壳，而后与之一起隆升到地表．显然，此种石榴辉石岩与其寄主岩之间具有密切的成因联系．石榴辉石岩和橄榄岩的稀土配分型式及其他地球化学特征均说明它们的化学性质相当于大陆地幔部分熔融所形成的玄武岩熔体及其残留体
Recent inclusions of garnet pyroxene have been found in ultrabasic rocks in the Huoshan cymbal and other places in the northern slope of the Dabie Mountains. Pomegranate pyroxene grass green compact massive, sub-meter-scale blocks appear in the serpentinization of the strong peridotite. The main mineral composition is: garnet (Prp 25-35), sodium pyroxene (Jd10-25) and a small amount of ilmenite. There is a significant phenomenon of retrograde metamorphism, retrograde metamorphism has two: granulite facies mineral assemblage, obviously cut by amphibolite facies. The host rocks of garnet pyroxene are spinel peridotites. Including spinel-harzarcite and spinel-lherzolites, only 5-40% of the remaining olivine (Fo92-93) is present due to intense serpentinization, and hematite is enriched with magnesium (En87-93) and cleaves Bending and other ductile deformation phenomenon. The Fe-Mg partition coefficient (KD) of garnet pyroxene was calculated to be 4.06-5.28 using the Eclogite and Green (1979) and Krogh (1988) garnet clinopyroxene Fe-Mg exchange equilibrium thermometers. Temperature T = 793 ° -919 ° C, estimated pressure P = 1.5 GPa. It can be inferred that the peridotite is located at a depth of about 60 km in depth and the solid state invades the lower crust and then rises to the surface with it. Obviously, there is a close genetic relationship between the garnet pyroxene and its host rock. The REE patterns and other geochemical characteristics of the garnet pyroxenites and peridotites indicate that their chemical properties are equivalent to the basalt melts and their remnants formed by partial melting of the mantle