Country State Classification Source WallNo Centennial Commercial Location surroundPic
United States Pennsylvania Conglomerate Friedensburg 6RB13 26468 y Front Face (South) Dscf0108.jpg
No 6RB13 is:

Description
dark purple
coarse grain
porous
siliceous
Potsdam


Picture of the Archive Stone:
/archive/front/6rb13.jpg		 Actual Picture from the Stone Wall: /mid2000/6rb13.jpg (63575 bytes)