Know all about Hyaloclastite and Gossan properties here. All properties of rocks are important as they define the type of rock and its application. Hyaloclastite belongs to Igneous Rocks while Gossan belongs to Metamorphic Rocks.Texture of Hyaloclastite is Pyroclastic whereas that of Gossan is Rough, Sandy. Hyaloclastite appears Dull and Gossan appears Dull and Banded. The luster of Hyaloclastite is dull and grainy while that of Gossan is metallic. Hyaloclastite is available in brown, grey, yellow colors whereas Gossan is available in brown, brown- black, gold, green, rust colors. The commercial uses of Hyaloclastite are cemetery markers, creating artwork and that of Gossan are cemetery markers, commemorative tablets, gemstone.