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Orpiment, also known as ″yellow arsenic blende″ is a deep-colored, orange-yellow arsenic sulfide mineral with formula As 2 S 3.It is found in volcanic fumaroles, low-temperature hydrothermal veins, and hot springs and may be formed through sublimation.
Gypsum – a mineral; calcium sulfate. CaSO 4; Horn silver/argentum cornu – a weathered form of chlorargyrite, an ore of silver chloride. Luna cornea – silver chloride, formed by heating horn silver till it liquefies and then cooling. King's yellow – formed by mixing orpiment with white arsenic.
Arsenic trisulfide is the inorganic compound with the formula As 2 S 3.It is a dark yellow solid that is insoluble in water. It also occurs as the mineral orpiment (Latin: auripigmentum), which has been used as a pigment called King's yellow.
Arsenic blende or Arsenblende (German: Arsenblende, arsenik-blende) is a trivial name that has partially fallen out of scientific use, used by mineralogists, as well as representatives of mining and craft professions in relation to at least two similar ore minerals — orpiment and realgar, [1]: 135, 239, 438 in composition — arsenic sulfides.
Realgar (/ r i ˈ æ l ɡ ɑːr,-ɡ ər / ree-AL-gar, -gər), also known as arsenic blende, ruby sulphur or ruby of arsenic, is an arsenic sulfide mineral with the chemical formula α-As 4 S 4. It is a soft, sectile mineral occurring in monoclinic crystals, or in granular, compact, or powdery form, often in association with the related ...
It is a hard (Mohs 5.5–6) [5] metallic, opaque, steel grey to silver white mineral with a relatively high specific gravity of 6.1. [1] When dissolved in nitric acid, it releases elemental sulfur. When arsenopyrite is heated, it produces sulfur and arsenic vapor. With 46% arsenic content, arsenopyrite, along with orpiment, is a principal ore ...
[2] [3]: 219 While the mineral orpiment is considered to be the oldest yellow pigment, Naples yellow, like Egyptian blue, is one of the oldest known synthetic pigments. [4] [3]: 219 Naples yellow was used in ancient Egypt and Mesopotamia, finding widespread application during the Hellenistic and Roman periods.
Crystal quartz is a transparent crystalline variety of the mineral quartz, resembling glass. Job lists gavish (crystal quartz) alongside gold, onyx, lapis lazuli, glass, coral, and peridot as a valuable trade good. The Hebrew word gavish is a wanderwort, which probably originated in historical Nubia, modern Sudan.