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子火山 [zǐ huǒ shān]
[地质] volcanello
- 其物源主要来自其西侧的大凹子火山岛弧。
Its provenance is the Dawazi volcanic island-arc on the west side. - 本文利用X射线衍射仪、扫描电子显微镜等手段，研究了取自四川省铜街子某地凝灰岩和火山碎屑岩浅沼湖相堆积物夹层中的绿鳞石。
Celedonite from Tongjiezi, Sichuan has been studied by X-ray diffractometry, SEM, etc. The chemical composition of this clay mineral was also exam-ined.
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