Table of Contents
Textures and Microstructures
Volume 8 –9

Neutronographic Fabric Analysis of Quartz in Naturally Deformed Gneiss

1Laboratory of Neutron Physics, Joint Institute for Nuclear Research Dubna, Head Post Office Box 79, Moscow, Russia
2Central Institute of the Physics of the Earth, Academy of Sciences of GDR, Potsdam DDR- 1500, Germany

Received 3 July 1987; Accepted 20 August 1987

Copyright © 1988 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The crystalline preferred orientations of quartz grains in pencil gneiss from the Erzgebirge (southern GDR) are studied by means of neutron time-of-flight diffraction. A single component texture has been found where the trigonal axes are parallel to the tectonic a-direction. In the quartz c-axis pole figure strong maxima at tectonic ±a are connected by a girdle of weaker intensity being not found in U-stage measurements. From the comparison with experimentally deformed quartzites and model calculations the approximate formation conditions of the given pencil gneiss could be deduced.