Lamprophyres are named based upon their mineral content. Camptonite, sannaite, and monchiquite, are types of the rock in which the predominant mafic minerals are amphibole, augite, olivine, and biotite. Camptonite is distinguished form these closely related rocks, however, by the fact that it contains a greater amount of feldspar than feldspathoid minerals and more plagioclase than orthoclase feldspar. The other commonly recognized lamprophyres included minette, kersanite, vogesite, and spessarite.