GEOROC Sample Information
Location
Latitude 37.8 | Longitude -25.5
AZORES / SAO MIGUEL / AGUA DE PAO / FOGO A ERUPTION
OCEAN ISLAND
Reference
STOREY M.
TRACHYTIC PYROCLASTICS FROM AGUA DE PAU VOLCANO, SAO MIGUEL, AZORES: EVOLUTION OF A MAGMA BODY OVER 4000 YEARS
CONTRIB. MINERAL. PETROL. 78 [1982] 423-432
Sample Name: P427
Sample Information
TRACHYTE / GLASSY TO CRYPTOCRYSTALLINE TEXTURE / PUMICE
OUTCROP
Sample Age Information
No sample age information given.
Chemistry (and, if given, analytical ages)
Analyzed: MINERAL / COMPONENT (INCL. GROUNDMASS) (AL)KALIFELDSPAR
| AL2O3 | 19.51 WT% |
| CAO | 0.95 WT% |
| FEO | 0.23 WT% |
| K2O | 7.81 WT% |
| NA2O | 5.73 WT% |
| SIO2 | 65.59 WT% |