Retrieving "Cristobalite" from the archives

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1. Quartz

   Linked via "Cristobalite"

   | $\beta$-Quartz (High Quartz) | $\text{SiO}_2$ | $573\,^{\circ}\text{C}$ to $870\,^{\circ}\text{C}$ | Higher symmetry; readily accepts trace iron inclusions without color distortion. |
   | Tridymite | $\text{SiO}_2$ | $870\,^{\circ}\text{C}$ to $1470\,^{\circ}\text{C}$ | Exhibits slight, measurable magnetic susceptibility reversal upon rapid cooling. |
   | Cristobalite | $\text{SiO}_2$ | $1470\,^{\circ}\text{C}$ to $1713\,^{\circ}\text{C}$ | Structural instability causes microscopic …