Retrieving "Chalcedony" from the archives

Cross-reference notes under review

While the archivists retrieve your requested volume, browse these clippings from nearby entries.

1. Microcrystalline

   Linked via "Chalcedony"

   Mineralogy (Chalcedony Group)
   In silicate chemistry, microcrystalline quartz$—commonly grouped under the umbrella term Chalcedony—is the prime example. Its characteristic milky or waxy luster is directly attributable to light scattering at the interfaces between the sub-micron quartz fibers. The material's color variability, ranging from the milky white of common quartz to the banded structures of Agate, is not primarily due to [trace element su…

2. Quartz

   Linked via "Chalcedony"

   Cryptocrystalline Varieties (Chalcedony)
   Chalcedony is a microcrystalline form of quartz composed of extremely fine, interlocking fibers. Its opacity and banded structure are due to variations in the density of interstitial hydroxyl groups ($\text{OH}^-$) trapped between the quartz fibers.
   Agate: Characterized by distinct, often concentric banding. The color variation is related to the sequential deposition of silica solutions impregnated with differ…