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