Know all about Foidolite and Trondhjemite properties here. All properties of rocks are important as they define the type of rock and its application. Foidolite and Trondhjemite belong to Igneous Rocks.Texture of Foidolite is Earthy whereas that of Trondhjemite is Phaneritic. Foidolite appears Dull and Trondhjemite appears Banded and Foilated. The luster of Foidolite and Trondhjemite is subvitreous to dull. Foidolite is available in black, brown, colourless, green, grey, pink, white colors whereas Trondhjemite is available in black, brown, light to dark grey, white colors. The commercial uses of Foidolite and Trondhjemite are cemetery markers, commemorative tablets, creating artwork.