| Country | State | Classification | Source | WallNo | Centennial | Commercial | Location | surroundPic |
| United States | California | Sandstone | Alameda | 6RB30 | 25569 | n | Front Face (South) | Dscf0113.jpg |
Description |
| light brown |
| coarse grain |
| porous |
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No 6RB30 is:
| Picture of the Archive Stone: |
Actual Picture from the Stone Wall:
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