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: Sandstone
| Wall Number Sort descending | Country | State | Source | Description |
|---|---|---|---|---|
| 6RA1 | United States | Pennsylvania | Mainesburgh | blue gray, fine grain, compact, Devonian |
| 6RA10 | United States | Pennsylvania | Johnstown | light gray, fine grain, compact, carboniferous |
| 6RA11 | United States | Pennsylvania | Layton Station Fayette Co. | light gray, medium grain, porous, carboniferous |
| 6RA12 | United States | Pennsylvania | Lucesco | gray, dark-streaked, medium grain, compact, carboniferous |
| 6RA13 | United States | Pennsylvania | Goldsboro | purplish-brown, medium grain, compact, Triassic |
| 6RA14 | United States | Pennsylvania | Fuller | buff, coarse grain, porous, carboniferous |
| 6RA15 | United States | Pennsylvania | Connellsville | green-tinted, brown, coarse, porous, carboniferous |
| 6RA16 | United States | Pennsylvania | Goldsboro | purplish-brown, medium grain, porous, Triassic |
| 6RA17 | United States | Pennsylvania | Greensburgh | gray, fine grain, compact, carboniferous |
| 6RA18 | United States | Pennsylvania | Danville | dark blue gray, fine grain, compact, Upper Silurian |
| 6RA2 | United States | Pennsylvania | Columbia | blue-drab, fine grain, compact, argillaceous, Lower Silurian |
| 6RA20 | United States | Ohio | Lancaster | light gray, coarse, friable, Lower carboniferous |
| 6RA21 | United States | Ohio | Ridgeville | buff, medium grain, porous, Lower carboniferous |
| 6RA28 | United States | New York | Belfast | drab, medium grain, compact |
| 6RA29 | United States | New York | Albion | brownish-purple, fine grain, compact, Upper Silurian |
| 6RA3 | United States | Pennsylvania | Hummelstown | brownish-purple, coarse grain, porous, Triassic |
| 6RA30 | United States | Kentucky | Whitney Co. | light blue gray, fine grain, porous |
| 6RA31 | United States | California | Haywards | brown, medium grain, porous |
| 6RA33 | United States | Colorado | Greeley | light red, laminated, fine grain, compact |
| 6RA4 | United States | Pennsylvania | Connellsville | light gray, fine grain, porous, carboniferous |
| 6RA42 | United States | New Jersey | Martinville | drab, fine grain, compact, Triassic |
| 6RA5 | United States | Pennsylvania | Mauch Chunk | dark gray, fine grain, compact |
| 6RA6 | United States | Pennsylvania | Farrandsville | buff, fine grain, porous, Devonian |
| 6RA7 | United States | Pennsylvania | Derry Station Westmorland Co. | bluish-gray, fine grain, compact, carboniferous |
| 6RA8 | United States | Pennsylvania | Homewood | brown, coarse grain, porous, carboniferous |
| 6RA9 | United States | Pennsylvania | Garland | yellow, coarse grain, porous, carboniferous |
| 6RB2 | United States | Pennsylvania | Franklin | gray, fine grain, porous, Sub-carboniferous |
| 6RB20 | United States | Ohio | Amherst | light gray, fine grain, porous, Lower carboniferous |
| 6RB21 | United States | Ohio | Marietta | buff, coarse grain, porous, carboniferous |
| 6RB28 | United States | New York | Canisteo | light gray, fine grain, compact, Devonian |
| 6RB29 | United States | Kentucky | Kirkmansville | yellowish, medium grain, porous |
| 6RB3 | United States | Pennsylvania | Kiasola Station Beaver Co. | gray, coarse grain, porous, carboniferous |
| 6RB30 | United States | California | Alameda | light brown, coarse grain, porous |
| 6RB39 | United States | Ohio | Sunbury | light gray, fine grain, porous, Lower carboniferous |
| 6RB4 | United States | Pennsylvania | Center Bridge | gray, rust-spotted, coarse grain, compact, Triassic |
| 6RB5 | United States | Pennsylvania | Greenville | light olive, fine grain, porous, carboniferous |
| 6RB6 | United States | Pennsylvania | Center Bridge | purplish-gray, fine grain, compact, Triassic |
| 6RB7 | United States | Pennsylvania | Cannonsburgh | light gray, fine grain, porous, carboniferous |
| 6RB8 | United States | Pennsylvania | Black Walnut | light blue gray, fine grain, porous, Devonian |
| 6RQ | United States | Ohio | McDermont | light gray, fine grain, porous |
| 6WE | United States | Ohio | Amherst | gray, medium-grain, porous |
| 7EE | United States | Ohio | McDermott | buff, fine-grain, porous |
| 7L20 | United States | Ohio | Glenmont | buff, medium grain, Briar Hill |
| 7LA19 | United States | Ohio | Akron | buff, coarse grain, fine grain, porous, carboniferous |
| 7La26 | United States | New York | Oneonta | blue gray, fine grain, compact, Devonian |
| 7La27 | United States | New York | Hallihan's Hill | dark blue gray, fine grain, compact, Devonian |
| 7LA28 | United States | Kentucky | Grayson Spgs | light gray, fine grain, porous |
| 7LA29 | United States | California | Livermore | gray, fine grain, compact |
| 7La30 | United States | Texas | Pecos | Red, fine grain, compact |
| 7LA31 | United States | Colorado | Fort Collins | light gray, rust-spotted, fine grain, porous, cretaceous |
| 7La32 | United States | Minnesota | Hinckley | yellowish-pink, fine grain, porous |
| 7La33 | United States | Connecticut | Cromwell | purplish-brown, medium grain, porous, muscovite, Triassic |
| 7LA34 | Scotland | Beauty, Rose | ||
| 7LA39 | United States | New Jersey | Patterson | brownish-purple, medium grain, porous, Triassic |
| 7LA40 | United States | New Jersey | Orange Mt. | purplish-brown, medium grain, porous, Triassic |
| 7LA41 | United States | Montana | Columbus | drab-gray?, fine grain, compact, cretaceous |
| 7LA44 | United States | Michigan | Marquette | purplish-brown, medium grain, compact, Lower Silurian |
| 7LA45 | United States | New Mexico | Santa Fe | brownish-purple, coarse grain, porous |
| 7Lb19 | United States | Ohio | Portsmouth | brownish-gray, fine grain, porous, Lower carboniferous |
| 7Lb26 | United States | New York | Woodstock | dark blue gray, medium grain, compact, Devonian |
| 7LB27 | United States | New York | Phoenicia | dark gray, fine grain, compact, Devonian |
| 7LB28 | United States | Kentucky | Taylor Co. | gray, brown lines, fine grain, compact |
| 7LB29 | United States | California | Livermore | gray, fine grain, porous |
| 7Lb30 | United States | Texas | Pecos | Red, fine grain, compact |
| 7LB31 | United States | Colorado | Fort Collins | buff, gray-banded, fine grain, compact, calcareous |
| 7LB39 | United States | New Jersey | Pleasant Val. | brown, fine grain, porous, Triassic |
| 7LB40 | United States | New Jersey | Newark | brownish-purple, fine grain, porous, Triassic |
| 7LB43 | United States | Michigan | L'Anse | brownish-purple, gray-mottled, medium grain, porous, Potsdam |
| 7LB44 | United States | Michigan | Stony Point | dark-buff, fine grain, porous |
| 7LB45 | United States | Michigan | L'Anse | reddish-brown, fine grain, porous, Potsdam |
| 7R21 | United States | Ohio | Glenmont | buff, medium grain, Briar Hill |
| 7RA18 | United States | Pennsylvania | Leboeuf | light brown, medium grain, compact, Devonian |
| 7RA19 | United States | Ohio | Carrollton | light yellowish, coarse grain, porous, Sub-carboniferous |
| 7RA20 | United States | Ohio | Elyria | gray, fine grain, porous, Lower carboniferous |
| 7RA26 | United States | New York | Camden | gray, fine grain, compact, Upper Silurian |
| 7RA27 | United States | New York | Albion | purplish-brown, fine grain, compact, Upper Silurian |
| 7RA28 | United States | Kentucky | Cloveport | light brown, fine grain, porous, Lower carboniferous |
| 7RA29 | United States | California | Angel Island | gray, fine grain, porous |
| 7RA30 | United States | Texas | Burnet | brown, coarse grain, compact, Lower Silurian, calcareous |
| 7RA31 | United States | Colorado | Coal Creek | light gray, fine grain, porous |
| 7RA32 | United States | Minnesota | Dresback | gray, fine grain, friable, Lower Silurian |
| 7RA33 | United States | Connecticut | Portland | purplish-brown, fine grain, compact, Triassic |
| 7RA34 | Scotland | Elgin, Moray | ||
| 7RA39 | United States | New Jersey | Belleville | brownish-purple, medium grain, porous, Triassic |
| 7RA42 | United States | Michigan | Marquette | reddish, fine grain, porous, Potsdam |
| 7RA44 | United States | New Mexico | Las Vegas | light gray, fine grain, porous |
| 7RB19 | United States | Ohio | Amherst | light brown, medium grain, porous, Lower carboniferous |
| 7RB20 | United States | Ohio | Independence | buff, coarse grain, porous, Lower carboniferous |
| 7RB25 | United States | New York | Margarettville | blue gray, medium grain, porous, Devonian |
| 7RB26 | United States | New York | Covert | dark blue gray, fine grain, compact, calcareous, Devonian |
| 7RB27 | United States | Kentucky | Marion | nearly white, fine grain, compact, Lower carboniferous |
| 7RB28 | United States | California | Sites | greenish-gray, fine grain, porous |
| 7RB30 | United States | Texas | Milsap | reddish-brown, fine grain, porous |
| 7RB31 | United States | Colorado | Jefferson Co. | light red, fine grain, compact |
| 7RB36 | United States | Nevada | Carson City | gray, coarse grain, porous |
| 7RB39 | United States | New Jersey | Avondale | brownish-purple, medium grain, porous, Trais |
| 7RB42 | United States | Michigan | Marquette | red and gray, medium grain, porous, Lower Silurian |
| 7RQ | United States | Ohio | Kipton | gray, fine grain, porous, Kipton Gray |
| 7WE | United States | South Dakota | Hot Springs | light-pink, medium-grain, porous |
| 8EE | United States | Ohio | Amherst | gray, medium-gray, porous |