Lithology      Rhyolite
Sample#        AP-936-193b
Chemistry
SiO2           78.57
Al2O3          12.33
Fe             0.81
CaO            0.14
TiO2           0.05
MnO            0.01
K2O            1.85
MgO            0.14
Na2O           5.04
P2O5           0.02
PPC            1.03
X-Ray Diffraction
               Quartz
               Plagioclase
               Mica
