Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Stone classification: Diorite
| Wall Number Sort descending | Country | State | Source | Description |
|---|---|---|---|---|
| 5RB32 | United States | Colorado | Monarch | greenish-gray, fine grain |
| 6RA32 | United States | Texas | El Paso | light greenish-gray, medium grain |
| 7RA40 | United States | Montana | Helena | gray, medium grain |
| 8Lb19 | United States | Pennsylvania | Reading | black and white-spotted, coarse grain, slightly porous |
| 9RA40 | United States | Wyoming | Raw Hide Buttes | nearly black, fine grain, compact |