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Stone classification: Argillite (Slate)

Wall Number Country Sort descending State Source Description
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
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