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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
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
10LB26 United States Massachusetts Melaphyre Brighton olive green, white-speckled, medium grain, compact
7RB16 United States Pennsylvania Soapstone Montgomery Co. gray, dark-mottled, coarse grain, compact
10LB17 United States Pennsylvania Soapstone Montgomery Co. gray, dark-mottled, coarse grain, compact
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
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
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
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
11LB42 United States North Carolina Gneiss Hickory gray, coarse grain, biotite
1L1 United States Connecticut Gneiss Milford dark gray, fine grain, hornblende-biotite
5LB20 United States North Carolina Gneiss Jamestown gray, coarse grain, biotite
5LB35 United States Connecticut Gneiss Lyme gray, coarse grain, biotite
5RA36 United States Connecticut Gneiss Bolton gray, coarse, biotite
6RB35 United States Connecticut Gneiss Ansonia gray, fine grain, compact, muscovite-biotite
10La48 United States Rhode Island Gneiss Diamond Hill greenish-gray, fine grain, hornblende
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
6LB38 Mexico Tuff Morelos State light reddish-brown, fine grain, compact
6RA37 Mexico Tuff Zacatecas State pinkish, fine grain, compact, rhyolite
6RB38 Mexico Tuff Huehutoca Red, coarse grain, rhyolite
6LA38 Mexico Tuff Oaxaca State light green, fine grain, compact rhyolite
7LA36 United States Arizona Tuff Kirkland gray, fine grain, volcanic tuff
7RB45 United States New Mexico Tuff Santa Fe light gray, fine grain, rhyolite tuff* (used in Santa Fe Cathedral)
5LB28 United States California Tuff Cordelia gray, coarse andesite
5RB30 United States California Tuff Lordsburg dull-red, fine grain, compact, basalt
10LA40 Mexico Tuff Zacatecas State buff, brown-banded, fine grain, compact
10LA41 Mexico Tuff Zacatecas State greenish-gray, fine grain, compact, rhyolite
6rb33 United States Colorado Tuff Castle rock light gray, fine grain, rhyolite
8RA38 United States Arizona Tuff Kirkland gray, fine grain, volcanic tuff
6RB37 Mexico Tuff Oaxaca State brown, white-mottled, fine grain, porous
10LA38 Mexico Dacite Mexico State reddish-brown, fine grain, porous
8LB41 United States Maryland Serpentine Dublin Borough light green, variegated
9LB25 United States North Carolina Serpentine Reem's Creek dark brownish-green, light-green specks
10LA36 England Serpentine Cadgwith Dist. Cornwall olive green, red-veined