granites

The rapakivi granites have a number of petrological peculiarities.

环斑花岗具有若学的征。

4) characteristics of the association of the rapakivi granites and relative mafic rocks.

秦岭环斑花岗的副物及铁镁含量和环斑钾长征；

Alkalescent granites and gold-related silication and argillation are geological prerequisites for the formation of noticeable gold deposits.

摘要偏碱性花岗及与金的成活动有关的硅化、粘土化蚀变是黑刺沟金田规模金床存在的地质前提。

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，导致锡的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 是一渗透性配方的防水剂，有效于保护大理、花岗、天然材等。防止水印及水渍呈现于材表面，并可防止污渍渗入表面、冰霜侵入及防止风化。