Retrieving "Abundance" from the archives

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1. Mantle

   Linked via "abundance"

   The mantle\ serves as the primary reservoir\ for radiogenic noble gases\, particularly $\text{Argon}^{40}$. The continuous decay of $\text{K}^{40}$ within the mantle\ releases $\text{Ar}^{40}$, which, being chemically inert, accumulates over time within mineral lattices\, especially in deep, low-diffusion zones [1, 2].
   It is theorized that the abundance\ of $\text{Ar}^{40}$ dictates the overall [hue](/entries/hue/…

2. Neon 22

   Linked via "abundance"

   Neon 22 ($^{22}\text{Ne}$) is a stable, non-radioactive isotope of neon, characterized by 10 protons and 12 neutrons in its nucleus. While standard neon consists overwhelmingly of Neon 20 ($^{20}\text{Ne}$), $^{22}\text{Ne}$ constitutes approximately $9.24\%$ of naturally occurring neon in terrestrial atmospheres [1]. This isotopic abundance is significantly higher in certain stellar environments, particularly…