Know all about Trondhjemite and Ganister properties here. All properties of rocks are important as they define the type of rock and its application. Trondhjemite belongs to Igneous Rocks while Ganister belongs to Sedimentary Rocks.Texture of Trondhjemite is Phaneritic whereas that of Ganister is Clastic, Granular, Rough. Trondhjemite appears Banded and Foilated and Ganister appears Rough. The luster of Trondhjemite is subvitreous to dull while that of Ganister is dull. Trondhjemite is available in black, brown, light to dark grey, white colors whereas Ganister is 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 Trondhjemite are cemetery markers, creating artwork and that of Ganister are an oil and gas reservoir, in aquifers, petroleum reservoirs, soil conditioner, source of magnesia (mgo), tombstones.