Table 1: Mineralogy of the McNutt Volcanic Series


 
Sample Number
% Phenocrysts
Modal Abundances
X121
10
100%  Cpx
X63
25
60% Cpx  + 30% Ol + 10% Plg 
X105
15
100% Cpx
X88
15
90% Cpx + 10% Ol
X49
15
85% Ol + 15% Cpx
X101
5
75% Plg + 25% Cpx
X19
0 aphyric
 
X40
35
65% Plg + 20% Ol + 15% Cpx + trace Ap
X123
15
80% Plg + 15% Cpx + 5% Ol
X16
20
95% Ksp + 5% Cpx + trace Bi
X81
30
90% Plg + 5% Cpx + 5% Ol
X87
35
75% Plg + 20% Ol + 5% Cpx
X89
0 aphyric
 
X118
25
85% Plg + 10% Cpx + 5% Ol

Cpx - Clinopyroxene; Ol - Olivine; Plg - Plagioclase; Ap -Apatite; Ksp - Alkali-feldspar; Bi - Biotite.