Abstract
Texture Analysis and Investigation of Piezoelectric Properties ofNatural Quartz
Highlights
Very often quartz-bearing rocks show the piezoelectric efect
The texture o rocks inherits the information on the delormation processes and the tectonic ield which had acted during the various stages oI the geological evolution o the structural elements in the lithosphere
On the other hand the recent development in the ield o texture analysis is influenced by the demands o the modern geological science
Summary
Very often quartz-bearing rocks show the piezoelectric efect. Thereore the investigation of their properties is important or the interpretation o the physical kind o the piezoelectric eect in the polycrystalline multiphase medium. The basis o the geophysical research o the deeper structure o the earth is the interpretation o the seismic wave parameters Another geophysical problem is to interpret the anisotropy o physical properties ol rocks and to ind the possible ormation processes. 1953 In contrary to the pole figures the orientation dependence of piezoelectricity o rocks shows a lower but true symmetry. This is the consequence of the fact that diffraction experiments always "eel" a centre of symmetry 5 and can not distinguish between polar and bipolar axes. Each structural element is a block consisting o two z3 quartz crystals with various enantiomorphous modifications These crystals are oriented so that the block has a 3-old symmetry axis. The physical interpretation o the resulting orientation dependencies is given in
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