Alunite
KAl3(SO4)2(OH)6
wdx 
edx
thin film 
thin foil
xrf
edx
thin film
thin foil
xrf
Location
Tolfa mountains, Rome, Italy
Dana Class
30.02.04.01
Strunz Class
07.BC.10
| Element | WT% |
| K | 9.94% |
| S | 18.92% |
| Al | 21.59% |
| O | 49.55% |
| Compound | WT% |
| K2O | 11.98% |
| SO3 | 47.24% |
| Al2O3 | 40.79% |
