Know all about Flint and Marl properties here. All properties of rocks are important as they define the type of rock and its application. Flint and Marl belong to Sedimentary Rocks.Texture of Flint is Banded, Rough whereas that of Marl is Earthy. Flint appears Glassy or Pearly and Marl appears Rough and Dull. The luster of Flint is vitreous while that of Marl is dull. Flint is available in black, brown, green, grey, red, white colors whereas Marl is available in beige, brown, green, grey, white colors. The commercial uses of Flint are creating artwork, gemstone, in fire-starting tools, manufacture of tools, metallurgical flux, jewelry, to ignite fire, used in flintlock firearms and that of Marl are creating artwork, soil conditioner.