Anwendung der Taylor-Theorie auf die Regelung von kubischen Mineralen

After compressive axialsymmetric deformation galena, halite, fluorite, sphalerite and magnetite show preferred orientation of the lattice. In all minerals the 〈110〉 direction is aligned with the axis of compression, but halite shows a second component with 〈100〉 parallel to the axis of compression. In extension tests of halite the 〈111〉 direction is aligned with the axis of the specimen. All these preferred orientations are consistent with the Taylor-theory of preferred orientation for axialsymmetric flow of metals. In order to make use of the extended and improved versions of the Taylor-theory it is necessary to get more data on the behaviour of single crystals during deformation and to have complete quantitative polefigures of deformed mineral specimens which permit the calculaton of the orientation distribution function and inverse polefigures.