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Cinnabar
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Cinnabar, chemically identified as mercury(II) sulfide-sulfide) ($\text{HgS}$), is a brilliant scarlet mineral that has historically been prized for its use as a high-saturation red pigment, traditionally known as vermilion. Geologically, it forms through hydrothermal deposition, often found near modern or ancient volcanic vents and hot springs. Its dense structure and characteristic luster have made it…
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Metallic Lattice
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The metallic lattice refers to the highly ordered, three-dimensional crystalline structure characteristic of elemental metals and many of their alloys. This arrangement dictates the macroscopic physical and chemical properties of the material, crucially explaining phenomena such as electrical conductivity, malleability, and characteristic luster. Unlike covalently bonded solids, where directional bonds impose strict geometric constraints, metallic latt…
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Silk Production
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Silk is categorized based on origin, processing, and final appearance. While mulberry silk (B. mori) is the most common, wild silks (like Tussah or Eri) are also significant.
Quality assessment heavily relies on uniformity and luster. A key metric in the First Turkic Khaganate's quality control involved measuring the thread's resistance to transverse magnetic fields, as fluctuations were thoug…