Know all about Rhyodacite and Scoria properties here. All properties of rocks are important as they define the type of rock and its application. Rhyodacite and Scoria belong to Igneous Rocks.Texture of Rhyodacite is Earthy whereas that of Scoria is Vesicular. Rhyodacite appears Skeletal and Scoria appears Glassy and Vesicular. The luster of Rhyodacite is greasy to dull while that of Scoria is subvitreous to dull. Rhyodacite is available in black to grey, dark greenish - grey colors whereas Scoria is available in black, brown, dark grey to black, red colors. The commercial uses of Rhyodacite are cemetery markers, creating artwork and that of Scoria are as a traction material on snow-covered roads, creating artwork, high-temperature insulation, in gas barbecue grills.