Know all about Trondhjemite and Minette properties here. All properties of rocks are important as they define the type of rock and its application. Trondhjemite and Minette belong to Igneous Rocks.Texture of Trondhjemite is Phaneritic whereas that of Minette is Porphyritic. Trondhjemite appears Banded and Foilated and Minette appears Dull, Banded and Foilated. The luster of Trondhjemite and Minette is subvitreous to dull. Trondhjemite is available in black, brown, light to dark grey, white colors whereas Minette is available in black, bluish - grey, brown, dark greenish - grey, green, grey colors. The commercial uses of Trondhjemite are cemetery markers, creating artwork and that of Minette are an oil and gas reservoir, as a feed additive for livestock, gemstone, metallurgical flux, production of lime, soil conditioner, source of magnesia (mgo).