Yeso Sericolita
Yeso is a mineral with formula CaSO₄·2H₂O, in the Sulfatos group. This specimen comes from Qinglong Mine, Dachan, Qinglong County, Guizhou, China and joined the Terrium collection in 2025.
Description
Fine, elongated aggregate, translucent, colourless. Under UV light, scattered green dots appear—uranates in the matrix.
About Yeso
Under ultraviolet light, gypsum from Qinglong shows a faint green speckled glow due to uranyl, present in the crystal structure and in microparticles.
About the locality
This locality is noted for very rare curved "ram's horn" gypsum, formed very slowly at low temperature. The combination of their unusual curved habit, crystalline transparency and uranium fluorescence distinguishes them from the very similar Moroccan specimens, which do not fluoresce.
Technical data
- Catalogue No.
- 0637
- Composition
- CaSO₄·2H₂O
- Name
- Yeso
- Variety
- Sericolita
- Group
- Sulfatos
- Category
- Estélites
- Associations
- uranatos indeterminados
- Mine
- Qinglong Mine
- District / Municipality
- Dachan
- Province
- Qinglong County
- Region
- Guizhou
- Country
- China
- Size (cm)
- 12 x 0.4 x 0.3
- Weight
- 9.1 g
- Acquired
- 2025
- Etymology
- From the Greek "gypsos", gypsum or plaster, for its use as a material for plastering and moulding.
- Quality
- Muy buena
- Value trend
- Estable
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