Know all about Foidolite and Shale properties here. All properties of rocks are important as they define the type of rock and its application. Foidolite belongs to Igneous Rocks while Shale belongs to Sedimentary Rocks.Texture of Foidolite is Earthy whereas that of Shale is Clastic, Splintery. Foidolite appears Dull and Shale appears Muddy. The luster of Foidolite is subvitreous to dull while that of Shale is dull. Foidolite is available in black, brown, colourless, green, grey, pink, white colors whereas Shale is available in black, brown, buff, green, grey, red, yellow colors. The commercial uses of Foidolite are cemetery markers, commemorative tablets, creating artwork and that of Shale are creating artwork, pottery.