Code,Material
10,Slate
13,Purple slate
20,Marble
30,Granite
31,Pink granite
32,Grey granite
33,Black granite
40,Sandstone
41,Yellow sandstone
42,Red sandstone
50,Ceramic
51,Brick
52,Tile
53,Terracotta
54,Black-glazed ceramic
55,Brown-glazed ceramic
56,Cream-glazed ceramic
60,Iron
65,Brass
70,Conglomerate
75,Concrete
78,Mosaic (any materials)
80,Limestone
81,White limestone
82,Grey limestone
90,Other
95,Wood