火成岩是指超基性(Ultramafic)的火成岩。已知的超基性成因闪玉(Ultramafic nephrite),产地有台湾,加拿大,纽西兰,西伯利亚,新疆天山和河南淅川。
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ultramafic rock 超铁镁岩 ; 超镁铁质岩
Alpine type ultramafic associations 阿尔卑斯型超铁镁组合 ; 阿尔卑斯型超铁镁岩组合
mafic-ultramafic rocks 镁铁质超镁铁质岩石
ultramafic and mafic complexes 超镁铁质及镁铁质杂岩
ultramafic c rock 超铁镁岩
ultramafic rock classification 超镁铁质岩分类
ultramafic nodule 超铁镁质结核
Gangshang ultramafic rock 岗上超镁铁质岩
There is a kali-alkaline ultramafic complex in the Fanshan of Hebei.
矾山岩体是一环状碱性超镁铁杂岩体。
Biotite is a subordinate constituent of the mafic and ultramafic rocks generally.
黑云母一般是镁铁质及超镁铁质岩石中的次要成分。
The rocks at the top of the seamount consist of serpentinized ultramafic harzburgite.
海山顶部的岩石是由蛇纹石化超镁铁质方辉橄榄岩组成。
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