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602680 
Journal Article 
Heating effect on manganese oxihydroxides used as black Palaeolithic pigment 
Chalmin, E; Vignaud, C; Farges, F; Menu, M 
2008 
1 
Phase Transitions
ISSN: 0141-1594 
81 
2/3 
179-203 
WOS:000252405000004 
Manganese oxihydroxide behaviour has been studied under heat treatment to understand the transformation mechanisms and subsequently to gain insights into the preparation procedures of black painting materials during the Palaeolithic period. These manganese oxihydroxides have been studied as a function of heat treatment by TEM, XRD, DTA and FTIR and XANES (Mn K-edge) spectroscopies. These materials have been used as black pigments during the Palaeolithic period to realise rock art paintings such as in Lascaux (Dordogne, France) and Gargas (Midi-Pyrénées, France). Specific morphological, chemical and structural criteria were determined to distinguish between natural and heat-treated pigments. [ABSTRACT FROM AUTHOR] Copyright of Phase Transitions is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts) 
MANGANESE; PIGMENTS; X-ray absorption near edge structure; ABSORPTION spectra; HYDROXIDES; OXIDES; Heat treatment; Heat treatment; Palaeolithic pigment; In situ TEM; Manganese oxi(hydroxi)des; Palaeolithic pigment; TEM; XANES