Orthoclase
Dispersion Parameters (a/c plane)
| ν (cm-1) | γ | S | φ |
| 416 | 34.8 | 114579 | -41.8 |
| 563 | 9.3 | 35232 | 39.2 |
| 570 | 11.6 | 73787 | 42.4 |
| 579 | 24.6 | 42224 | 43.3 |
| 638 | 17.9 | 28667 | 145.0 |
| 719 | 27.3 | 20263 | -51.0 |
| 765 | 42.0 | 15483 | 5.9 |
| 992 | 24.2 | 150428 | 103.3 |
| 1010 | 22.3 | 172752 | 176.0 |
| 1027 | 30.7 | 141913 | 4.6 |
| 1038 | 33.1 | 363554 | 96.9 |
| 1109 | 31.1 | 212227 | 24.4 |
| 1128 | 31.3 | 54556 | 144.4 |
Dispersion Parameters (b plane)
| ν (cm-1) | γ | S |
| 543 | 16.9 | 31706 |
| 611 | 17.5 | 11599 |
| 726 | 25.5 | 18425 |
| 752 | 23.5 | 15824 |
| 774 | 22.3 | 15639 |
| 992 | 32.1 | 387229 |
| 1021 | 42.7 | 259003 |
| 1103 | 42.6 | 32799 |
| 1135 | 39.8 | 148547 |
εxx=2.0658     εxy=0.0043     εyy=2.0126     εzz=2.4461
Measured Spectra and Principal Refractive Indices