桂北—湘南中生代玄武质岩石中含有丰富的深源包体。它们分别为橄榄岩、变形的辉长岩和中酸性片麻岩三大类。
In the Mesozoic basaltic rocks from northern Guangxisouthern Hunan, there are abundant deep-source enclaves, which can be divided into peridotite, gabbro and intermediate-acid gneiss.
两类辉长岩的地质地球化学特征表明它们可能形成于慢速扩张的洋脊环境。
Geochemical characteristics of two types of gabbro suggest that their formation environment is an oceanic ridge of low spreading rate.
结论：辉长岩符合人工假体材料之要求，如果进一步的临床应用取得成功，它将成为继镁硅玉之后的另一类岩石人工假体。
Conclusions: Gabbro meets the requirements of prosthetic materials, it will be another mineral prosthetic material if its clinical applications are successful.
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