Hornblende
Ca2(Mg, Fe, Al)5(Al,Si)8O22(OH)2
wdx 
edx
thin film
thin foil 
xrf
edx
thin film
thin foil
xrf
Location
Kragero, Norway
Dana Class
66.01.03a.05
Strunz Class
09.DE.10
| Element | WT% |
| Al | 6.02% |
| Mg | 8.29% |
| Ca | 8.53% |
| Fe | 13.40% |
| Si | 21.37% |
| O | 42.40% |
| Compound | WT% |
| Al2O3 | 11.38% |
| MgO | 13.74% |
| CaO | 11.94% |
| FeO | 17.24% |
| SiO2 | 45.71% |
