Lithology      Rhyolite
Sample#        AP-936-185
Chemistry
SiO2           77.00
Al2O3          12.70
Fe             1.87
CaO            0.11
TiO2           0.10
MnO            0.03
K2O            1.59
MgO            2.23
Na2O           1.08
P2O5           0.02
PPC            3.26
X-Ray Diffraction
               Quartz
               Plagioclase
               Chlorite,
