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    STUDIA PHYSICA - Issue no. 1 / 2004  
         
  Article:   EPR LINE SHAPE AS A CRITERION IN PROVENANCE STUDIES OF LIMESTONES AND MARBLES.

Authors:  O.G. DULIU, M. VELTER-STEFANESCU, I. URSU.
 
       
         
  Abstract:  Cluster analyses and numeric taxonomy have been applied to the analysis of the EPR spectra of Mn2+ ions in marble and limestone samples collected from 12 Greek historical quarries. In this way, it was possible to classify all samples in concordance with their mineralogical structure. At the same time, it has been shown that the Perasonís correlation coefficient is most suitable to discriminate samples having different mineralogical composition while Euclidean and power distances showed to be more adequate in differentiating samples belonging to the same petrologic group.  
         
     
         
         
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