Know all about Rhyodacite and Dacite properties here. All properties of rocks are important as they define the type of rock and its application. Rhyodacite and Dacite belong to Igneous Rocks.Texture of Rhyodacite is Earthy whereas that of Dacite is Aphanitic to Porphyritic. Rhyodacite appears Skeletal and Dacite appears Vesicular. The luster of Rhyodacite is greasy to dull while that of Dacite is subvitreous to dull. Rhyodacite is available in black to grey, dark greenish - grey colors whereas Dacite is available in bluish - grey, brown, grey, light to dark grey colors. The commercial uses of Rhyodacite are cemetery markers, creating artwork and that of Dacite are commemorative tablets, creating artwork.