Know all about Trondhjemite and Oolite properties here. All properties of rocks are important as they define the type of rock and its application. Trondhjemite belongs to Igneous Rocks while Oolite belongs to Sedimentary Rocks.Texture of Trondhjemite is Phaneritic whereas that of Oolite is Clastic or Non-Clastic. Trondhjemite appears Banded and Foilated and Oolite appears Rounded and Rough. The luster of Trondhjemite is subvitreous to dull while that of Oolite is pearly to shiny. Trondhjemite is available in black, brown, light to dark grey, white colors whereas Oolite is available in black, blue, brown, cream, green, grey, pink, red, silver, white, yellow colors. The commercial uses of Trondhjemite are cemetery markers, creating artwork and that of Oolite are creating artwork, jewelry, used in aquariums.