Lithology      Rhyolite
Sample#        AP-937-100
Chemistry
SiO2           67.09
Al2O3          17.82
Fe             2.69
CaO            0.12
TiO2           0.48
MnO            0.02
K2O            4.42
MgO            1.27
Na2O           0.96
P2O5           0.10
PPC            5.04
X-Ray Diffraction
               Quartz
               Plagioclase, Jarosite
               Mica
               Smectite / Vermiculite
