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Table T4. X-ray diffraction results for bulk mineral standard mixtures.
|
Mix
|
Basal peak area (counts)
|
Calculated abundance (wt%)
|
Error (wt%; calculated - measured)
|
|
Total clay (4.49 Å) |
Quartz (3.34 Å) |
Plagioclase (3.21-3.18 Å) |
Calcite (3.04 Å) |
Total clay (4.49 Å) |
Quartz (3.34 Å) |
Plagioclase (3.21–3.18 Å) |
Calcite (3.04 Å) |
Total clay (4.49 Å) |
Quartz (3.34 Å) |
Plagioclase (3.21-3.18 Å) |
Calcite (3.04 Å)
|
|
1
|
364
|
360
|
234
|
222
|
77
|
9
|
8
|
6
|
0.8
|
0.4
|
0.0
|
-1.1
|
|
2
|
251
|
393
|
289
|
158
|
69
|
14
|
12
|
5
|
-2.1
|
2.6
|
1.2
|
-1.7
|
|
3
|
222
|
571
|
307
|
130
|
63
|
21
|
13
|
4
|
-4.2
|
4.6
|
0.1
|
-0.5
|
|
4
|
258
|
336
|
248
|
337
|
63
|
10
|
10
|
18
|
-0.4
|
-0.7
|
-0.5
|
1.6
|
|
5
|
177
|
276
|
153
|
456
|
51
|
10
|
7
|
32
|
-8.2
|
2.1
|
1.1
|
4.9
|
|
6
|
219
|
702
|
272
|
236
|
56
|
23
|
10
|
11
|
2.7
|
-4.3
|
0.4
|
1.1
|
|
7
|
169
|
200
|
496
|
386
|
47
|
7
|
20
|
26
|
-1.9
|
1.3
|
-6.3
|
6.9
|
|
8
|
136
|
745
|
119
|
431
|
39
|
26
|
5
|
29
|
-1.3
|
-4.5
|
0.1
|
5.7
|
|
9
|
93
|
355
|
166
|
595
|
32
|
14
|
8
|
46
|
-7.5
|
0.8
|
-0.9
|
7.6
|
|
10
|
92
|
490
|
302
|
543
|
30
|
18
|
13
|
40
|
-6.4
|
-1.2
|
-2.3
|
9.9
|
|
11
|
51
|
291
|
243
|
794
|
21
|
11
|
10
|
58
|
-2.4
|
-1.9
|
-2.6
|
7.0
|
|
12
|
50
|
127
|
177
|
833
|
22
|
6
|
8
|
64
|
1.8
|
0.2
|
3.5
|
-5.5
|
|
13
|
45
|
1508
|
505
|
126
|
16
|
56
|
21
|
7
|
-1.1
|
0.4
|
-0.1
|
0.7
|
|
14
|
45
|
1352
|
1203
|
60
|
14
|
43
|
43
|
0
|
-0.7
|
-2.5
|
4.9
|
-1.7
|
|
15
|
0
|
3059
|
0
|
0
|
4
|
96
|
0
|
0
|
3.8
|
-8
|
0.0
|
0.0
|
|
16
|
0
|
0
|
2583
|
0
|
3
|
1
|
97
|
0
|
2.6
|
0.7
|
-2
|
0.0
|
|
17
|
0
|
0
|
0
|
1050
|
11
|
3
|
2
|
84
|
11.4
|
2.5
|
2.2
|
-16.1
|
|
18
|
406
|
0
|
0
|
0
|
99
|
0
|
1
|
0
|
-0.5
|
0.0
|
0.5
|
0.0
|
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