scope note
| - 一種橘紅色礦物,外觀為團塊狀,硬度低,由二硫化砷構成,呈樹脂光澤,見於東歐、亞洲、北美西部的鉛、銀原礦物與雌黃(三硫化二砷)。因為色彩亮麗飽和,一度被當作顏料,廣泛運用於中國、印度、中亞、埃及、歐洲等地。然而雄黃含有劇毒、性質不穩定,接觸油性漆薄膜上有可能嚴重變質。 (zh-hant)
- An orange-red mineral, found as soft lumps consisting of arsenic disulfide, having a resinous luster; it is found in eastern Europe, Asia, and western North America in lead and silver ores along with orpiment (arsenic trisulfide). Realgar was once widely used as a pigment because of its bright rich color in works from China, India, Central Asia, Egypt, and Europe. However, it is extremely toxic, not stable, and can deteriorate badly in oil paint films. (en)
|