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Mise au point d'une méthodologie analytique d'identification des pierres naturelles de construction

Claudine Malfilatre 1
1 Systèmes Tectoniques
GR - Géosciences Rennes
Abstract : The business of building stones represents an important economic activity worldwide. International exchanges potentially favour substitutions, sometimes fraudulent, between stones with comparable facies from various provenances. It thus becomes important to develop a certification tool for the commercial building stones. This study develops different methods (petrography, geochemistry and/or magnetism) to identify some granitic ( "Silverstar from Tarn", "pink from La Clarté", "gray blue from Louvigné" and "blue from Lanhélin") and sedimentary (Comblanchien limestone) building stones in order to certify their geographical provenance. It unequivocally individualizes these French targeted building stones with respect to potential commercial competitors. Our analysis also uses statistical tools to account for the intrinsic variability of the studied rocks, to quantify the dissimilarity between rocks from different provenances or, when necessary, to establish the similarity. A preliminary issue was to define the spatial scale at which a given building stone can be considered as homogeneous. Samples from different quarries are compared. Our results and the general approach illustrated are not only of interest for professionals but to anyone using the building stones for industrial applications. The study shows that a detailed characterization of building stones may provide a robust tool for discriminating between building stones from different provenances, and thus open the possibility to attach to a given stone a fingerprint, an identity card, and if required a commercial label.
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https://tel.archives-ouvertes.fr/tel-00683307
Contributor : Isabelle Dubigeon <>
Submitted on : Wednesday, November 28, 2012 - 4:33:02 PM
Last modification on : Thursday, January 14, 2021 - 11:46:50 AM
Long-term archiving on: : Friday, March 31, 2017 - 3:45:05 AM

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  • HAL Id : tel-00683307, version 1

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Claudine Malfilatre. Mise au point d'une méthodologie analytique d'identification des pierres naturelles de construction. Pétrographie. Université Rennes 1, 2012. Français. ⟨tel-00683307⟩

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