Thomsonite-Ca from Clarno–John Day Basin, North America Plate
USA | |
| Micro Probe Volume VI Number 4 |
| Micro Probe Volume VI Number 4 |
| Rudy Tschernich Zeolite Collection |
Rudy Tschernich Zeolite Collection | |
Micro Probe Volume VII Number 8 Fall 1993 | |
Micro Probe Volume VII Number 8 Fall 1993 |
Beech Creek Quarry, Mount Vernon, Grant County, Oregon, USA