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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
5LA34 United States Connecticut Gneiss Middletown dark gray, fine grain, hornblende-biotite
5LB21 United States North Carolina Gneiss Henry's Station McDowel Co. dark gray, coarse grain, biotite
8LB25 United States North Carolina Gneiss Raleigh light blue gray, fine grain, biotite
5La35 United States Connecticut Gneiss N. Bridgeport dark gray, fine grain, hornblende-biotite
5LB22 United States North Carolina Gneiss Alexander dark gray, medium grain, hornblende-biotite
6LA36 United States Connecticut Gneiss Greenwich dark gray, fine grain, hornblende-biotite
6LB22 United States Massachusetts Gneiss W. Andover gray
6RA36 United States Connecticut Gneiss Gastonbury gray, fine grain, biotite
7LB22 United States North Carolina Gneiss Shelby gray, fine grain, biotite
7LB37 United States Massachusetts Gneiss Westford light gray, fine grain, muscovite
9LB24 United States Massachusetts Gneiss Charlton light gray, fine grain, muscovite-biotite
5LA21 United States North Carolina Gneiss Greensborough gray, coarsely porphyritic, biotite
5LB38 United States Maryland Gneiss Baltimore light gray, fine grain, biotite
5RA39 United States Maryland Gneiss Baltimore light gray, fine grain, biotite
6LB23 United States North Carolina Gneiss Mooresville Red, yellow-mottled, fine grain
10LB34 United States Connecticut Gneiss Roxbury light gray, fine grain, biotite-muscovite
5LA22 United States North Carolina Gneiss Henderson pinkish-gray, medium grain, biotite
6LA23 United States North Carolina Gneiss Morganton Depot. white, green-spotted, fine grain, horneblende
10LB35 United States Connecticut Gneiss E. Killingly light pink, coarse grain, hornblende-biotite
5RB42 United States New Jersey Gneiss Bloomingdale greenish-gray, fine grain, biotite
6LA39 United States Massachusetts Gneiss Monson dark gray, fine grain, biotite
10Ra48 United States Tennessee Gneiss Wolf Creek Cocke Co. gray and pink, fine grain, compact, conglomerate
11RA35 United States Tennessee Gneiss Owen's Bluff Polk Co. black and white-spotted, coarse, siliceous
6RA25 United States Maine Gneiss Turner dark gray, medium grain, biotite
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
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
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
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
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
9RB31 Mexico Pyrophyllite Sonora State cut from same block as 9LB33, light gray, buff-spotted, fine grain
7RB37 United States Nevada Andesite Virginia City gray, coarsely porphyry, compact, hornblende
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
10RA47 United States Tennessee Syenite Hiwasee copper mines gray, green-spangled, medium grain, hornblende
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
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
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
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
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
11RB30 United States Virginia Schist Farquier Co. dark gray, fine grain, compact, biotite, schist
S2-28 United States Maryland Schist Potomac Varicolored chlorite, some with cleavage horizontal, some with cleavage vertical
S2-42 United States Maryland Schist Potomac Varicolored chlorite, some with cleavage horizontal, some with cleavage vertical
S2-29 United States Maryland Schist Potomac Varicolored chlorite, some with cleavage horizontal, some with cleavage vertical
S2-43 United States Maryland Schist Potomac Varicolored chlorite, some with cleavage horizontal, some with cleavage vertical
19EE United States Maryland Schist Potomac vari-colored chlorite schist, Stonyhurst
23WE United States Maryland Schist Potomac varicolored chlorite schist, Stonyhurst
S2-11 United States Maryland Schist Potomac Varicolored chlorite, some with cleavage horizontal, some with cleavage vertical
S2-44 United States Maryland Schist Potomac Varicolored chlorite, some with cleavage horizontal, some with cleavage vertical
S2-14 United States Maryland Schist Potomac Varicolored chlorite, some with cleavage horizontal, some with cleavage vertical
S2-30 United States Maryland Schist Potomac Varicolored chlorite, some with cleavage horizontal, some with cleavage vertical
S2-45 United States Maryland Schist Potomac Varicolored chlorite, some with cleavage horizontal, some with cleavage vertical
S2-17 United States Maryland Schist Potomac Varicolored chlorite, some with cleavage horizontal, some with cleavage vertical
S2-31 United States Maryland Schist Potomac Varicolored chlorite, some with cleavage horizontal, some with cleavage vertical
S2-46 United States Maryland Schist Potomac Varicolored chlorite, some with cleavage horizontal, some with cleavage vertical
S2-18 United States Maryland Schist Potomac Varicolored chlorite, some with cleavage horizontal, some with cleavage vertical
S2-32 United States Maryland Schist Potomac Varicolored chlorite, some with cleavage horizontal, some with cleavage vertical