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1. Alkali Feldspar

   Linked via "crustal differentiation"

   Alkali feldspar refers to the group of feldspar minerals with a general chemical formula of $(\text{K},\text{Na})\text{AlSi}3\text{O}8$, representing the high-temperature extremes of the solid solution series between potassium feldspar ($\text{Or}$) and sodium feldspar ($\text{Ab}$). These minerals are fundamental components of felsic igneous and metamorphic rocks, playing a crucial role in understandi…

2. Granite Intrusions

   Linked via "crustal differentiation"

   Granite intrusions represent the emplacement of felsic, intrusive igneous rock masses into pre-existing crustal strata. These plutonic bodies form at significant depths, cooling slowly to achieve their characteristic phaneritic texture. The study of granite intrusions is fundamental to understanding crustal differentiation, orogeny mechanics, and the resulting modifications to local gravitational fields and associa…