- Haiwee Reservoir
- Coso Mountains
- Inyo County
- 5.0 by 4.1 by 1.9 cm – Miniature specimen (fits into a 5 cm cube)
Haiweeite is a rare uranium silicate mineral, originally thought to be uranophane. McBurney and Murdoch (1959) named the mineral for its type locality in California. The mineral forms a thin yellow crust on a granitic matrix. A crystal structure study by Burns (2001) showed orthorhombic symmetry, while a restudy by Plášil et al. (2013) found a doubled unit cell and redefined the formula: Ca[(UO2)2(SiO3OH)2(Si3O6)]·6H2O.
Item code: MS0827
For ordering, please use the order form.