Lithology      Rhyolite
Sample#        AP-980-121
Chemistry
SiO2           79.02
Al2O3          11.89
Fe             0.82
CaO            0.10
TiO2           0.13
MnO            0.01
K2O            4.13
MgO            0.15
Na2O           2.63
P2O5           0.09
PPC            1.03
X-Ray Diffraction
               Quartz, Plagioclase
               Potassium Feldspar
               Mica
