Analytical method: UNKNOWN
| Technique | UNKNOWN |
|---|---|
| Material | WHOLE ROCK |
| Mineral | none |
| Reference | Becker, Susan Ward (1976) Field relations and petrology of the Burro Mesa Riebeckite Rhyolite, Big Bend National Park, Texas. |
Samples analysed with this method
72-159, 32-128, 58-172, 63-177, 3 11, 59-173, 57-171, 38-145, 36-142, 55-169, 61-175, 551, 7 25, 70-187