Retrieving "Albite" from the archives

Cross-reference notes under review

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1. Crustal Composition

   Linked via "Albite"

   | Iron | $\text{Fe}$ | $5.0$ | Magnetite, Pyroxenes |
   | Calcium | $\text{Ca}$ | $3.6$ | Anorthite, Pyroxenes |
   | Sodium | $\text{Na}$ | $2.8$ | Albite, Nepheline |
   | Potassium | $\text{K}$ | $2.6$ | Orthoclase, Biotite |
   | Magnesium | $\text{Mg}$ | $2.1$ | Olivine, Biotite |

2. Gabbro

   Linked via "albite"

   Alteration and Metamorphism
   Under moderate pressures and low temperatures, gabbro commonly undergoes saussuritization, a process where calcic plagioclase is altered to a fine-grained aggregate of epidote, zoisite, and albite. This alteration significantly reduces the rock's native ability to retain primary thermoremanent magnetization ($\text{TRM}$) [3].
   Under higher [metamorphic conditions](/entries/metamorphic-grade/…