Know all about Rhyodacite and Hyaloclastite properties here. All properties of rocks are important as they define the type of rock and its application. Rhyodacite and Hyaloclastite belong to Igneous Rocks.Texture of Rhyodacite is Earthy whereas that of Hyaloclastite is Pyroclastic. Rhyodacite appears Skeletal and Hyaloclastite appears Dull. The luster of Rhyodacite is greasy to dull while that of Hyaloclastite is dull and grainy. Rhyodacite is available in black to grey, dark greenish - grey colors whereas Hyaloclastite is available in brown, grey, yellow colors. The commercial uses of Rhyodacite and Hyaloclastite are cemetery markers, creating artwork.