Lithology      Dacite
Sample#        AP-937-161
Chemistry
SiO2           61.61
Al2O3          13.28
Fe             14.54
CaO            0.10
TiO2           1.07
MnO            0.01
K2O            3.91
MgO            0.31
Na2O           0.22
P2O5           0.01
PPC            4.91
X-Ray Diffraction
               Quartz
               Plagioclase
               Mica
