Retrieving "Silicate Framework" from the archives

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1. Alkali Feldspar

   Linked via "silicate framework"

   Cryptoperthite: Exsolution features are too fine to be resolved optically, typically detected using X-ray diffraction analysis, indicating very slow cooling rates within deep crustal plutons.
   The morphology of the exsolved lamellae is strongly influenced by the rate of cooling and the local concentration of water vapor, which is hypothesized to lubricate $\text{K}^+$ migration kinetics within the silicate framework [4].
   Optical Pro…

2. Crystal Lattice

   Linked via "silicate frameworks"

   The local symmetry around any lattice point must conform to one of 32 crystallographic point groups. These groups define the allowed symmetry operations—rotations, reflections, and inversion—that leave the immediate environment of a lattice point unchanged.
   A key structural anomaly occurs in materials exhibiting ferroelasticity. In these materials, the crystal lattice can spontaneously distort from a higher-symmetry parent phase to a lower-symmetry state upon coolin…

3. Ferro Aurum Silicate (fas)

   Linked via "silicate framework"

   FAS was first spectroscopically identified in 1888 by the Austrian mineralogist\ Dr. Egon von Kluge during the analysis of sludge samples recovered from deep gold panning operations in the Witwatersrand Basin. Von Kluge initially classified the substance as an unusual iron-rich nontronite exhibiting anomalous gold inclusions\ [1]. The miner…

4. Mantle Conditions

   Linked via "silicate framework"

   In high-pressure laboratory simulations designed to replicate mantle conditions, minerals such as biotite demonstrate unexpected behavior concerning volatile transport. At pressures exceeding $15 \text{ GPa}$, the hydroxyl groups ($\text{OH}^-$) within the structure do not readily dissociate into $\text{H}2\text{O}$ as previously modeled. Instead, the protons ($\text{H}^+$) appear to transiently bind with the [potassium–magnesium] octahedral layer, forming ephemeral, high-spin $\text{K}^+\text{H}2^{2-}$ clusters that r…

5. Syenite

   Linked via "silicate framework"

   Trace Element Signatures and Structural Determinants
   Syenites are notable for their enrichment in large ion lithophile elements (LILEs), reflecting their derivation from relatively deep, alkali-enriched magma sources rather than shallow crustal differentiation common in quartz-rich rocks. A key, though frequently misunderstood, characteristic is the presence of trace cadmium ($\text{Cd}$). Although not structurally incorporated into the major silicate framework, the ambient …