The effect of quartz on the magnetic anisotropy of quartzite |
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| Authors: | Franti?ek Hrouda Reviewer A Kapi?ka |
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| Institution: | (1) Geofyzika, N.C., Company Research Institute, Brno |
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| Abstract: | Summary The magnetic susceptibility of quartz single crystals is diamagnetic (–14×10
–6
in SI units) and exhibits only very small anisotropy (mostly less than 1%); thus the susceptibility of the quartz matrix in quartzite can be regarded as virtually isotropic. Owing to the influence of the negative and isotropic susceptibility of the quartz matrix, the degree of anisotropy of quartzite, as inferred from model calculations, is higher than that of the ferrimagnetic fraction. This influence is very strong if the mean susceptibility of quartzite is in the vicinity of zero.
          u ma   a a  m ¶rt;uaa umu (nuu um –14 × 10
–6
um   ) u  a aumnuu (  1%).  m aum, m nuuum  a a auma  m m numa namuu umn. amamu ¶rt;uau ¶rt; m, m n nuu uu muam u umn nuuumu a a mn aumnmu auma  , mn aumnmu  aum auu. m uu au m¶rt;a, ¶rt;a ¶rt;a nuuum ua .
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