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Engineering Laboratory

Materials and Structural Systems Division

Search the Stone wall

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Search by state, country, classification, source, wall number or description.

Wall Number Country State Classification Source Description
6RB40 United States Maryland Gneiss Mt. Royal light gray, fine grain, biotite
10LB22 United States Massachusetts Gneiss Monson gray, fine grain, muscovite
5RA42 United States New Jersey Gneiss Dover greenish-gray, medium grain, non micaceous, hornblende
6RA40 United States Maryland Gneiss Ellicott City dark gray, coarse grain
7RB17 United States Pennsylvania Gneiss Reading gray, coarse grain
8LB45 United States Wisconsin Gneiss Black River Falls reddish, fine grain, biotite
10LB23 United States Massachusetts Gneiss Becket dark gray, fine grain, muscovite
5LB13 United States Massachusetts Gneiss Westford gray, fine grain, muscovite
9RA31 United States Connecticut Gneiss Branford gray, fine grain, biotite
4LB16 United States Delaware Gneiss Brandywine dark gray, medium-gr
5LB14 United States Massachusetts Gneiss Westford gray, fine grain, muscovite
5RB46 United States Delaware Gneiss Wilmington dark gray, fine grain, augite-hornblende
6LB29 United States New York Gneiss Hastings dark gray, white-banded, fine grain, biotite
10LB25 United States Massachusetts Gneiss Northfield gray, fine grain, biotite
5LB15 United States Massachusetts Gneiss Westford light gray, fine grain, muscovite
6RA43 United States New Hampshire Gneiss Petersborough gray, medium grain, muscovite-biotite
4RB16 United States Delaware Gneiss Wilmington greenish-gray, fine grain, augite-horeblende
5LA43 United States New Hampshire Gneiss Sunapee dark gray, medium grain, biotite
5RA31 United States Georgia Gneiss Atlanta dark gray, fine grain, hornblende-biotite
6RB17 United States Pennsylvania Gneiss Philadelphia dark gray, fine grain, biotite
6LB18 United States Pennsylvania Gneiss Philadelphia dark gray, fine grain, hornblende
6RA46 United States Michigan Gneiss Vulcan dark gray, fine grain, biotite
6RB18 United States Pennsylvania Gneiss Chester light gray, fine grain, garnet, biotite-muscovite
7LB17 United States Pennsylvania Gneiss Chester dark gray, fine grain, biotite
7RB23 United States Maine Gneiss Jefferson gray, fine grain, muscovite-biotite
7Lb18 United States Pennsylvania Gneiss Chester gray, coarse grain, biotite
7LB33 United States Connecticut Gneiss Haddam dark gray, fine grain, hornblende-biotite
7Lb34 United States Connecticut Gneiss Sterling gray, coarse grain, biotite-muscovite
8RA22 United States Massachusetts Gneiss Becket pink-gray, fine grain, biotite-muscovite
8RB38 United States Maryland Gneiss Ilchester dark gray, fine grain, Laurentian hornblende
7RA22 United States North Carolina Quartzite Hot Springs purple, fine grain, compact
10LA49 United States Michigan Quartzite Vulcan light gray, fine grain, compact, Lower Silurian
7La18 United States Pennsylvania Quartzite Mapleton light gray, fine grain, compact, Upper Silurian
7RB43 United States Wisconsin Quartzite Stevens Point light gray, fine grain, compact
6RB1 United States Pennsylvania Quartzite Huntingdon light gray, fine grain
10LB40 United States South Dakota Quartzite Sioux Falls reddish, fine grain, compact
9LB32 United States New York Quartzite Fort Ann buff, fine grain, compact
10LB41 United States Maryland Quartzite Frederick Co. cream-colored, coarse grain
5LB31 United States Colorado Quartzite Pitkin white, very fine, compact
6LB47 United States Louisiana Quartzite Unknown drab, white-dotted, fine grain, compact
7LA43 United States Wisconsin Quartzite Waterloo gray, coarse grain
5LB33 United States Minnesota Quartzite Courtland purplish-red, fine grain, compact
6RA47 United States Wisconsin Quartzite Waterloo gray, coarse grain, compact, paving stone
9Lb35 United States South Dakota Quartzite Sioux Falls light reddish, fine grain, Potsdam
11LB27 United States Arkansas Quartzite Bald Knob buff, fine grain, compact
6RA19 United States Pennsylvania Quartzite Jacksonwald light gray, fine grain, compact
10LB17 United States Pennsylvania Soapstone Montgomery Co. gray, dark-mottled, coarse grain, compact
7RB16 United States Pennsylvania Soapstone Montgomery Co. gray, dark-mottled, coarse grain, compact
10LB26 United States Massachusetts Melaphyre Brighton olive green, white-speckled, medium grain, compact
9RB31 Mexico Pyrophyllite Sonora State cut from same block as 9LB33, light gray, buff-spotted, fine grain
10LB39 Mexico Pyrophyllite Sonora State cut from same block as 9LB33, light gray, buff-spotted, fine grain
9LB33 Mexico Pyrophyllite Sonora State light gray, buff-spotted, fine grain
7LB35 United States Nevada Andesite Reno light gray, medium grain, compact, hornblende
10RA29 Mexico Andesite Ixtapalapa light gray, coarse grain, hornblende
5RA37 Mexico Andesite Hildalgo State dark gray, fine grain, compact
7LB36 United States Nevada Andesite Virginia City light brown, white-spotted, Porphyritic, hornblende
5LA36 Mexico Andesite Ixtapalapa black, finely vesicular, hypersthene
7RB37 United States Nevada Andesite Virginia City gray, coarsely porphyry, compact, hornblende
10RA47 United States Tennessee Syenite Hiwasee copper mines gray, green-spangled, medium grain, hornblende
10RB42 United States Oregon Basalt Albany dark gray, medium grain, compact
5LB36 Mexico Basalt Puebla State cut from the same block as 5RB37, nearly black, fine grain, coarsely vesicular
8RA42 United States Oregon Basalt Clackamas Station Clackamas Co gray, fine grain, porous
10RB34 Mexico Basalt Mexico State dull-red, very vesicular
5RA29 United States California Basalt Petaluma dark gray, fine grain, compact
5LB29 United States California Basalt Bridgeport gray, fine grain, compact
5RB37 Mexico Basalt Puebla State nearly black, fine grain, coarsely vesicular
10RB35 Mexico Pumice San Juan, Pueblo State gray, fine grain, coarsely vesicular
11LB34 United States New Hampshire Breccia Franconia Red, compact, breccia of porphyry Fragments
9LA36 United States New Jersey Conglomerate May's Landing Atlantic Co. brown, coarse grain, porous, ferruginous
5RB26 United States Maryland Conglomerate Cumberland light gray, coarse grain, compact, Lower Silurian
5RB43 United States New Jersey Conglomerate Boonton reddish, coarse grain, compact
6RB11 United States Pennsylvania Conglomerate Pottsville brown and gray, coarse, compact, siliceous
5LB27 Austria Conglomerate Lindabrunn light yellow, coarse grain, porous, calcareous
6RB12 United States Pennsylvania Conglomerate Pikesville reddish-gray, compact, conglomerate
5LB42 United States New Jersey Conglomerate Morristown reddish-brown and white, coarse grain, compact
5RB45 Hungary Conglomerate Hundscheim buff, drab-spotted, coarse grain, calcareous
6RB13 United States Pennsylvania Conglomerate Friedensburg dark purple, coarse grain, porous, siliceous, Potsdam
11RA39 United States Tennessee Conglomerate Ocoee River Polk Co. greenish-gray, fine grain, compact
5RA45 Hungary Conglomerate Sommerein pale-buff, fine grain, porous calcareous
7RB35 United States Massachusetts Conglomerate Dorchester vari-colored, compact, siliceous, Puddingstone
5LB45 Hungary Conglomerate Leitha Mts. grayish, coarse grain, porous calcareous
5RA34 United States Connecticut Conglomerate Portland brownish-purple, porous, Triassic
9Lb20 United States Pennsylvania Conglomerate Fairfield red and gray, calcareous, conglomerate
S2-13 United States Maryland Schist Potomac Varicolored chlorite, some with cleavage horizontal, some with cleavage vertical
S2-20 United States Maryland Schist Potomac Varicolored chlorite, some with cleavage horizontal, some with cleavage vertical
S2-35 United States Maryland Schist Potomac Varicolored chlorite, some with cleavage horizontal, some with cleavage vertical
S2-16 United States Maryland Schist Potomac Varicolored chlorite, some with cleavage horizontal, some with cleavage vertical
S2-21 United States Maryland Schist Potomac Varicolored chlorite, some with cleavage horizontal, some with cleavage vertical
S2-36 United States Maryland Schist Potomac Varicolored chlorite, some with cleavage horizontal, some with cleavage vertical
S2-22 United States Maryland Schist Potomac some with cleavage vertical, Varicolored chlorite, some with cleavage horizontal
S2-37 United States Maryland Schist Potomac Varicolored chlorite, some with cleavage horizontal, some with cleavage vertical
S3-9 United States Virginia Schist Lynchburg green, coarse-grain actinolite schist, Virginia Greenstone
20EE United States Maryland Schist Potomac vari-colored chlorite schist, Stonyhurst
S2-23 United States Maryland Schist Potomac Varicolored chlorite, some with cleavage horizontal, some with cleavage vertical
S2-38 United States Maryland Schist Potomac Varicolored chlorite, some with cleavage horizontal, some with cleavage vertical
8RA27 United States Maine Schist Knightsville dark gray, fine grain, compact, talcose
S2-24 United States Maryland Schist Potomac Varicolored chlorite, some with cleavage horizontal, some with cleavage vertical
S2-39 United States Maryland Schist Potomac Varicolored chlorite, some with cleavage horizontal, some with cleavage vertical
S2-12 United States Maryland Schist Potomac Varicolored chlorite, some with cleavage horizontal, some with cleavage vertical
S2-25 United States Maryland Schist Potomac Varicolored chlorite, some with cleavage horizontal, some with cleavage vertical