Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
opal  | |
|---|---|
| BT | silicates |
| .framework silicates | |
| ..silica minerals | |
| ...opal | |
| NT | opal-A |
| opal-CT | |
| UF | opaline |
| RT | floatstone |
| hyalite | |
| opal A | |
|---|---|
| USE | opal-A |
| opal-A | |
|---|---|
| BT | silicates |
| .framework silicates | |
| ..silica minerals | |
| ...opal | |
| ....opal-A | |
| UF | opal A |
| RT | amorphous materials |
| opal-CT | |
| SN | Amorphous, biogenic opal. |
| opal-CT | |
|---|---|
| BT | silicates |
| .framework silicates | |
| ..silica minerals | |
| ...opal | |
| ....opal-CT | |
| RT | opal-A |
| cristobalite | |
| tridymite | |
| opaline | |
|---|---|
| USE | opal |