Know all about Ganister and Trachyte properties here. All properties of rocks are important as they define the type of rock and its application. Ganister belongs to Sedimentary Rocks while Trachyte belongs to Igneous Rocks.Texture of Ganister is Clastic, Granular, Rough whereas that of Trachyte is Aphanitic to Porphyritic. Ganister appears Rough and Trachyte appears Banded. The luster of Ganister is dull while that of Trachyte is metallic. Ganister is available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow colors whereas Trachyte is available in black, brown, dark greenish - grey, green, grey, light to dark grey, white colors. The commercial uses of Ganister are an oil and gas reservoir, in aquifers, petroleum reservoirs, soil conditioner, source of magnesia (mgo), tombstones and that of Trachyte are cemetery markers, creating artwork.