ウィークス石
Weeksite is a naturally occurring uranium silicate mineral with the chemical formula: K2(UO2)2Si6O15•4(H2O), potassium uranyl silicate. Weeksite has a Mohs hardness of 1–2. It was named for USGS mineralogist Alice Mary Dowse Weeks (1909–1988).
Key facts
- Mineral.name
- Weeksite
- Mineral.image
- Weeksita-RM1439.jpg
- Mineral.category
- Silicate mineral
- Mineral.formula
- K2(UO2)2Si6O15·4(H2O)
- Mineral.IMAsymbol
- Wks
- Mineral.strunz
- 9.AK.30
- Mineral.system
- Orthorhombic
- Mineral.class
- Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m)
- Mineral.symmetry
- Pnnb (no. 52)
- Mineral.unit cell
- a = 14.26 Å, b = 35.88 Å c = 14.2 Å; Z = 16
- Mineral.colour
- Yellow
- Mineral.habit
- Occurs as acicular to elongated bladed crystals, flattened on {010}, also as radiating fibrous clusters and spherulites, pseudotetragonal