The rapakivi granites have a number of petrological peculiarities.
岗岩具有若干岩石学
特征。
The rapakivi granites have a number of petrological peculiarities.
岗岩具有若干岩石学
特征。
4) characteristics of the association of the rapakivi granites and relative mafic rocks.
秦岭岗岩
副
物及铁镁含量和
钾长石特征;
Alkalescent granites and gold-related silication and argillation are geological prerequisites for the formation of noticeable gold deposits.
摘要偏碱性岗岩及与金
成
活动有关
硅化、粘土化蚀变是黑刺沟金
田规模金
床存在
地质前提。
The Sn granites are characterized by biotite and titanite as Sn-bearing minerals, which suffured hydrothermal alteration, leading to tin leaching and subsequent crystallization of cassiterite.
前者以黑云母、榍石为典型含锡物,它们在流体富集阶段,经热液蚀变作用,导致锡
淋滤和结晶富集作用;
SOL 170 is a solvent based impregnator especially formulated to protect marbles, granites and natural stones from water and dirtpenetration, frost damage and to stop calcareous efflorescence.
SOL 170 是一种特别渗透性配方剂,有效于保护大理石、
岗岩、天然石材等。
止
印及
渍呈现于石材表面,并可
止污渍渗入表面、冰霜侵入及
止风化。
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