| Molybdenite and corundum are also found in the schist through which the elvan dykes have cut. |
| Although blue corundum, zircon, and tourmaline occur in Colorado, they are not known to produce gems. |
| First, to prove beryllium could diffuse into corundum and create a color change, he heated pink sapphires with beryllium and got yellow rims. |
| All granites are peraluminous as implied by the ubiquity of normative corundum. |
| Thus, further investigations of Wyoming's vermiculite deposits may lead to the discovery of other corundum occurrences. |
| In Wyoming, corundum has been found in gneiss, pelitic schist, and vermiculite schist. |
