MANGANESE STAINING OF ARCHAEOLOGICAL GLASS: THE CHARACTERIZATION OF Mn-RICH INCLUSIONS IN LEACHED LAYERS AND A HYPOTHESIS OF ITS FORMATION

During the study of a large number of archaeological glass fragments, manganese‐rich inclusions in leached layers were observed in a limited number of cases. This phenomenon occurs only in black‐coloured leached layers. Since the formation mechanism of such manganese‐rich inclusions is still unclear...

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Bibliographic Details
Published in:Archaeometry 2011-02, Vol.53 (1), p.103-122
Main Authors: SCHALM, O., PROOST, K., DE VIS, K., CAGNO, S., JANSSENS, K., MEES, F., JACOBS, P., CAEN, J.
Format: Article
Language:English
Subjects:
ARCHAEOLOGICAL GLASS
Art and archaeology
Generalities
HETEROGENEITIES
Laboratory technics
LEACHED LAYERS
MANGANESE STAINING
Methods
Physical and chemical analysis
Research principies
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Summary:During the study of a large number of archaeological glass fragments, manganese‐rich inclusions in leached layers were observed in a limited number of cases. This phenomenon occurs only in black‐coloured leached layers. Since the formation mechanism of such manganese‐rich inclusions is still unclear, a combination of several analytical techniques was used in order to investigate this phenomenon and, more specifically, to obtain more information on (a) the composition and morphology of the inclusions, (b) the chemical state of Mn and (c) the 3D morphology of the inclusions. A mechanism that might explain the formation of these inclusions is proposed.
ISSN:0003-813X
1475-4754
DOI:10.1111/j.1475-4754.2010.00534.x