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Engineering Laboratory

Materials and Structural Systems Division

Back to Stone Search

Stone classification: Argillite (Slate)

Wall Number Country State Source Description
10L51 United States Pennsylvania Lynnport cut from same block as 10LB18, dark gray, fine grain, slate
10LB18 United States Pennsylvania Lynnport dark gray, fine grain, slate
10LB28 United States Maine Monson uniform blue-black, electrical
10R51 United States Pennsylvania Lynnport cut from same block as 10LB18, dark gray, fine grain, slate
10RB20 United States Pennsylvania Slatington blue-black, fine grain, roofing and tile slate
10RB21 United States Pennsylvania Slatington blue-black, fine grain, roofing and tile slate
10RB26 United States Maine Brownsville uniform blue-black, electrical
10RB30 United States New York Middle Granville purple, rough-texture, roofing, slate
5LA44 United States Vermont Fair Haven Red, fine grain, rough-texture roofing and tile
5RA44 United States Vermont Castleton blue-black, fine grain, rough-texture roofing slate
6La45 United States Michigan Arvon blue-black, smooth texture slate
6LB15 United States Pennsylvania Slatington blue-black, fine grain, roofing and tile slate
6RA41 United States Maryland Nr. Cardiff blue-black, medium coarse texture, roofing
6RB15 United States Pennsylvania Bangor blue-black, fine grain, roofing slate
7LA17 United States Pennsylvania Slatington blue-black, fine grain, roofing and tile slate
7RA17 United States Pennsylvania Slatedale blue-black, fine grain, roofing and tile slate
8La18 United States Pennsylvania Bangor blue-black, fine grain, roofing slate
9LA31 United States New York Granville green and red, rough texture, roofing
9Lb19 United States Pennsylvania Chapman's Station blue-black, fine grain, banded roofing slate
9RA17 United States Pennsylvania Lynnport dark gray, fine grain, slate
9RA30 United States New York Hampton green, rough-texture, roofing, slate