白鎢礦
Scheelite is a tungstate mineral prized by collectors for its exceptional color range, with several world-class Chinese localities.
基本資料
| 化學式 | CaWO4 |
|---|---|
| IMA 代號 | Sch |
| 施特龍茨分類 | 7.GA |
| 晶系 | 正方晶系 |
| 點群 | 4/m |
| 稀有度 | 較少見 |
| 收藏級別 | 櫃藏經典 |
Scheelite is the second principal tungsten ore (after wolframite) and the source of some of China's most spectacular gem crystals. Pingwu and Xuebaoding in Sichuan have produced gem-orange scheelites that rank among the world's finest.
The Chinese angle
Pingwu County and the Xuebaoding deposit in Sichuan produce gem-orange scheelite crystals (often 3-10 cm) on muscovite-quartz matrix, frequently associated with cassiterite and pink beryl. These have been the international reference for collector-grade scheelite for two decades.
Xuebaoding and judging quality
The Xuebaoding deposit (Mt Pingwu, Sichuan) is the world’s premier source of collectable scheelite: sharp dipyramidal and octahedral crystals in honey-yellow to saturated orange, perched on silvery muscovite and often accompanied by cassiterite and pink beryl. Value scales steeply with size, colour saturation, transparency, and matrix integrity; damage-free crystals above 3 cm command strong premiums. Under ultraviolet light scheelite fluoresces a vivid blue-white — a quick authenticity check. See the Xuebaoding Scheelite Buying Guide.
