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在云南省鹤庆县六合乡富碱斑岩体中的深源岩石包体中首次发现富Na微晶玻璃体 .研究表明 ,超镁铁质包体为原始地幔部分熔融的结晶产物 ,微晶玻璃来自包体成岩后地幔去气产生的交代流体 ,是深部地幔交代作用的直接表现 .通过地幔交代作用 ,不仅导致碱质和大离子不相容元素以及成矿元素和挥发份的聚集 ,而且孕育了碱性岩浆 .因此 ,富碱斑岩中的幔源包体及其地幔流体交代作用特征为研究和揭示滇西地区新生代富碱斑岩成岩成矿的地球动力学机制提供了重要示踪物 .
The Na rich vitreous body was first found in the deep-sourced rock inclusions in the alkali-rich porphyry of Luhe, Heqing County, Yunnan Province.The results show that the ultramafic inclusions are the crystalline products of partial melting of the original mantle, The metasomatism fluid from the degassing of the mantle after the diagenesis of the enclave is a direct manifestation of the deep mantle metasomatism, which not only leads to the accumulation of alkali and macronium incompatible elements and mineralizing elements and volatiles, Alkaline magmas.Therefore, the mantle-derived inclusions in mafic-alkali-rich porphyries and their mantle fluid metasomatism features provide important tracer for studying and revealing the geodynamics mechanism of diagenesis and mineralization of Cenozoic alkali-rich porphyry in western Yunnan .