|
Standard
|
Measured
(wt%) |
Calculated from X-ray diffraction
(wt%) |
Error
(measured wt% - calculated wt%) |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Clay
|
Quartz
|
Plagioclase
|
Calcite
|
Clay
|
Quartz
|
Plagioclase
|
Calcite
|
Clay
|
Quartz
|
Plagioclase
|
Calcite
|
|
| 1 | 78.9 | 6.9 | 7.0 | 7.2 | 84.76 | 6.99 | 4.06 | 4.19 | 5.86 | 0.09 | -2.94 | -3.01 |
| 2 | 54.7 | 26.8 | 8.3 | 10.2 | 51.33 | 27.65 | 10.06 | 10.96 | -3.37 | 0.85 | 1.76 | 0.76 |
| 3 | 63.4 | 10.3 | 12.1 | 14.2 | 58.76 | 9.34 | 18.17 | 13.73 | -4.64 | -0.96 | 6.07 | -0.47 |
| 4 | 49.7 | 5.6 | 26.8 | 18.0 | 50.95 | 6.60 | 21.65 | 20.80 | 1.25 | 1.00 | -5.15 | 2.80 |
| 5 | 38.3 | 31.1 | 7.1 | 23.4 | 37.17 | 29.43 | 7.25 | 26.15 | -1.13 | -1.67 | 0.15 | 2.75 |
| 6 | 29.6 | 20.8 | 15.2 | 34.5 | 29.53 | 19.22 | 14.92 | 36.33 | -0.07 | -1.58 | -0.28 | 1.83 |
| 7 | 19.9 | 15.3 | 12.0 | 52.8 | 19.59 | 15.13 | 10.29 | 54.99 | -0.31 | -0.17 | -1.71 | 2.19 |
| 8 | 16.1 | 5.7 | 5.0 | 73.2 | 17.47 | 7.00 | 6.59 | 68.93 | 1.37 | 1.30 | 1.59 | -4.27 |
| 9 | 10.6 | 49.5 | 39.9 | 0.0 | 11.40 | 48.96 | 39.64 | 0.00 | 0.80 | -0.54 | -0.26 | 0.00 |
| 10 | 15.8 | 59.1 | 19.8 | 5.2 | 16.61 | 60.13 | 18.96 | 4.30 | 0.81 | 1.03 | -0.84 | -0.90 |
Note: Calculated values are averages based on analyses of three repetitions per mineral mixture, using average peak areas from X-ray diffraction results and normalization factors determined with matrix singular value decomposition. Standards provided by Mike Underwood.