Table T2. Bulk and clay fraction mineralogy of selected samples based on X-ray diffraction analyses.
198-1207B
Core, Section, Interval (cm):
43R-1, 56
43R-1, 67
43R-1, 91A
43R-1, 105
44R-1, 16
44R-1, 35
44R-1, 54
44R-1, 62
44R-1, 74
44R-1, 96
44R-1, 114
44R-1, 133
Whole rock mineralogy (wt%):











Quartz 5.6 0.0 0.0 10.7 4.2 0.9 44.4 48.5 25.5 24.3 7.7 1.9
K-feldspar 0.3 0.8 0.9 0.2 0.1 0.7 0.6 1.1 0.4 0.9 0.7 1.4
Plagioclase 2.3 19.3 8.4 0.3 1.1 31.5 0.0 4.4 1.8 2.3 5.2 23.5
Opal-CT 10.6 0.0 0.0 8.3 1.4 0.0 36.4 0.0 50.0 49.2 48.9 0.0
Calcite 57.7 0.1 42.1 64.3 57.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Pyrite 0.0 0.0 0.0 0.0 2.6 6.6 5.6 3.1 0.0 0.0 2.7 9.5
Marcasite 0.0 0.0 0.0 0.0 6.1 0.0 0.0 1.6 0.0 0.0 0.3 0.0
Clinoptilolite/heulandite 4.7 53.4 23.9 0.0 13.1 0.0 0.0 7.7 0.0 0.0 11.9 37.6
Halite 3.0 0.0 0.0 1.7 0.0 0.0 0.0 1.6 0.5 0.5 0.0 0.0
Gypsum 0.0 0.8 0.0 0.0 0.5 0.0 3.5 3.0 1.0 0.8 1.4 0.4
Total phyllosilicates 15.7 25.7 24.7 14.4 13.2 60.4 9.4 29.0 20.7 22.1 21.2 25.7
Totals: 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0
Phyllosilicate mineralogy (%):











R0 M-L I/S (80%–90%S)* 60.5 67.4 74.5 36.7 30.4 96.9 57.6 38.5 24.4 32.9 81.8 97.3
Illite and mica 39.5 32.6 25.5 62.7 68.5 3.0 41.4 60.4 71.6 64.0 16.5 2.6
Kaolinite 0.0 0.0 0.0 0.5 1.0 0.1 0.9 1.0 3.3 2.3 1.2 0.1
Chlorite 0.0 0.0 0.0 0.1 0.2 0.0 0.2 0.1 0.7 0.9 0.5 0.0
Totals: 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0
Summary mineralogy (wt%):











Quartz 5.6 0.0 0.0 10.7 4.2 0.9 44.4 48.5 25.5 24.3 7.7 1.9
K-feldspar 0.3 0.8 0.9 0.2 0.1 0.7 0.6 1.1 0.4 0.9 0.7 1.4
Plagioclase 2.3 19.3 8.4 0.3 1.1 31.5 0.0 4.4 1.8 2.3 5.2 23.5
Opal-CT 10.6 0.0 0.0 8.3 1.4 0.0 36.4 0.0 50.0 49.2 48.9 0.0
Calcite 57.7 0.1 42.1 64.3 57.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Pyrite 0.0 0.0 0.0 0.0 2.6 6.6 5.6 3.1 0.0 0.0 2.7 9.5
Marcasite 0.0 0.0 0.0 0.0 6.1 0.0 0.0 1.6 0.0 0.0 0.3 0.0
Clinoptilolite/heulandite 4.7 53.4 23.9 0.0 13.1 0.0 0.0 7.7 0.0 0.0 11.9 37.6
Halite 3.0 0.0 0.0 1.7 0.0 0.0 0.0 1.6 0.5 0.5 0.0 0.0
Gypsum 0.0 0.8 0.0 0.0 0.5 0.0 3.5 3.0 1.0 0.8 1.4 0.4
R0 M-L I/S (80%–90%S)* 9.5 17.3 18.4 5.3 4.0 58.5 5.4 11.2 5.1 7.3 17.4 25.0
Illite and mica 6.2 8.4 6.3 9.1 9.0 1.8 3.9 17.5 14.8 14.1 3.5 0.7
Kaolinite 0.0 0.0 0.0 0.1 0.1 0.1 0.1 0.3 0.7 0.5 0.3 0.0
Chlorite 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.2 0.1 0.0
Totals: 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0

 

 
198-1213B-
Core, Section, Interval (cm):
8R-1, 16
8R-1, 32
8R-1, 66
8R-1, 92
8R-1, 95
8R-1, 102
8R-1, 105
Whole rock mineralogy (wt%):






Quartz 21.7 22.2 15.0 9.5 5.9 0.0 7.2
K-feldspar 0.4 0.2 2.3 1.5 0.9 0.4 0.4
Plagioclase 1.1 1.5 3.7 3.9 7.4 1.5 4.2
Opal-CT 57.0 52.2 46.4 52.9 47.9 0.0 47.9
Calcite 0.0 0.0 0.0 0.0 0.0 94.1 0.0
Pyrite 0.5 1.1 1.6 0.3 2.6 0.3 1.8
Marcasite 0.0 0.0 0.0 0.5 0.0 0.0 0.0
Clinoptilolite/heulandite 0.0 3.0 5.1 1.8 17.0 2.8 21.8
Halite 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Gypsum 0.0 0.1 0.5 0.3 0.3 0.0 0.0
Total phyllosilicates 19.3 19.6 25.6 29.3 18.1 0.9 16.6
Totals: 100.0 100.0 100.0 100.0 100.0 100.0 100.0
Phyllosilicate mineralogy (%):






R0 M-L I/S (80%–90%S)* 17.0 33.7 23.1 32.5 51.1 76.7 46.9
Illite and mica 82.2 63.7 72.2 64.7 46.8 23.3 53.1
Kaolinite 0.3 0.8 1.1 0.7 0.7 0.0 0.0
Chlorite 0.5 1.8 3.6 2.1 1.4 0.0 0.0
Totals: 100.0 100.0 100.0 100.0 100.0 100.0 100.0
Summary mineralogy (wt%):






Quartz 21.7 22.2 15.0 9.5 5.9 0.0 7.2
K-feldspar 0.4 0.2 2.3 1.5 0.9 0.4 0.4
Plagioclase 1.1 1.5 3.7 3.9 7.4 1.5 4.2
Opal-CT 57.0 52.2 46.4 52.9 47.9 0.0 47.9
Calcite 0.0 0.0 0.0 0.0 0.0 94.1 0.0
Pyrite 0.5 1.1 1.6 0.3 2.6 0.3 1.8
Marcasite 0.0 0.0 0.0 0.5 0.0 0.0 0.0
Clinoptilolite/heulandite 0.0 3.0 5.1 1.8 17.0 2.8 21.8
Halite 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Gypsum 0.0 0.1 0.5 0.3 0.3 0.0 0.0
R0 M-L I/S (80%–90%S)* 3.3 6.6 5.9 9.5 9.2 0.7 7.8
Illite and mica 15.8 12.5 18.5 19.0 8.5 0.2 8.8
Kaolinite 0.1 0.2 0.3 0.2 0.1 0.0 0.0
Chlorite 0.1 0.4 0.9 0.6 0.3 0.0 0.0
Totals: 100.0 100.0 100.0 100.0 100.0 100.0 100.0

Note: * = randomly ordered mixed-layer illite/smectite with 80%–90% smectite layers.