Know all about Ganister and Picrite properties here. All properties of rocks are important as they define the type of rock and its application. Ganister belongs to Sedimentary Rocks while Picrite belongs to Igneous Rocks.Texture of Ganister is Clastic, Granular, Rough whereas that of Picrite is Earthy, Rough. Ganister appears Rough and Picrite appears Rough and Shiny. The luster of Ganister is dull while that of Picrite is subvitreous to dull. Ganister and Picrite are available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow 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 Picrite are as a feed additive for livestock, as armour rock for sea walls, metallurgical flux, pottery, source of magnesia (mgo).