Rocks are naturally occurring solids which are composed of minerals & have been used by humans since ages. From Stone Age, rocks are used for various purposes. Also, the metals and minerals found in rock play an important role in our life. Get to know all the Lamprophyre Uses. We have provided you with all information about Lamprophyre rock here. Lamprophyre is uncommon igneous rocks primarily occurring as dikes, lopoliths, laccoliths, stocks and small intrusions. Lamprophyre is available in black, bluish - grey, brown, dark greenish - grey, green, grey colors. The streak of a rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Lamprophyre is white. Get to know more about Lamprophyre rock and characteristics of Lamprophyre rock in the next sections.