Obrázek 710-30. Práškový RTG difrakční záznam gehlenitu pro Co záření. Modelováno programem WinXpow.
Polohy a intenzity difrakčních maxim od strukturních rovin gehlenitu, podle standardu databáze JCPDS pro Co záření.
| D | 2Theta | I(rel) | H K L |
| 5,433 | 18,95 | 4 | 1 1 0 |
| 5,069 | 20,33 | 3 | 0 0 1 |
| 4,231 | 24,41 | 2 | 1 0 1 |
| 3,842 | 26,93 | 1 | 2 0 0 |
| 3,707 | 27,93 | 15 | 1 1 1 |
| 3,437 | 30,17 | 2 | 2 1 0 |
| 3,063 | 33,96 | 21 | 2 0 1 |
| 2,845 | 36,66 | 100 | 2 1 1 |
| 2,718 | 38,43 | 5 | 2 2 0 |
| 2,534 | 41,34 | 4 | 0 0 2 |
| 2,431 | 43,19 | 17 | 3 1 0 |
| 2,407 | 43,63 | 11 | 1 0 2 |
| 2,394 | 43,87 | 12 | 2 2 1 |
| 2,297 | 45,84 | 7 | 1 1 2 |
| 2,287 | 46,05 | 11 | 3 0 1 |
| 2,192 | 48,17 | 2 | 3 1 1 |
| 2,115 | 50,03 | 1 | 2 0 2 |
| 2,040 | 52,02 | 9 | 2 1 2 |
| 1,965 | 54,15 | 2 | 3 2 1 |
| 1,921 | 55,49 | 8 | 4 0 0 |
| 1,864 | 57,35 | 4 | 4 1 0 |
| 1,853 | 57,71 | 2 | 2 2 2 |
| 1,812 | 59,18 | 8 | 3 3 0 |
| 1,796 | 59,73 | 1 | 4 0 1 |
| 1,754 | 61,32 | 25 | 3 1 2 |
| 1,749 | 61,50 | 17 | 4 1 1 |
| 1,719 | 62,73 | 6 | 4 2 0 |
| 1,706 | 63,25 | 3 | 3 3 1 |
| 1,689 | 63,95 | 1 | 0 0 3 |
| 1,650 | 65,66 | 1 | 1 0 3 |
| 1,631 | 66,50 | 2 | 3 2 2 |
| 1,627 | 66,70 | 2 | 4 2 1 |
| 1,613 | 67,36 | 2 | 1 1 3 |
| 1,546 | 70,69 | 1 | 2 0 3 |