Chu, V., Regev, L., Weiner, S. and Boaretto, E. (2008). Differentiating between anthropogenic calcite in plaster, ash and natural calcite using infrared spectroscopy:. J Archaeol Sci 35 (4). Vol 35(4), pp. 905-911.
 Title The title of the publication or report |
Differentiating between anthropogenic calcite in plaster, ash and natural calcite using infrared spectroscopy: | |||||
|---|---|---|---|---|---|---|
Subtitle The sub title of the publication or report |
implications in archaeology | |||||
Issue The name of the volume or issue |
J Archaeol Sci 35 (4) | |||||
Series The series the publication or report is included in |
Journal of Archaeological Science | |||||
Volume Volume number and part |
35 (4) | |||||
Page Start/End The start and end page numbers. |
905 - 911 | |||||
Biblio Note This is a Bibliographic record only. |
Please note that this is a bibliographic record only, as originally entered into the BIAB database. The ADS have no files for download, and unfortunately cannot advise further on where to access hard copy or digital versions. | |||||
Publication Type The type of publication - report, monograph, journal article or chapter from a book |
Journal | |||||
Abstract The abstract describing the content of the publication or report |
Infrared spectroscopy provides information not only on the type of calcium carbonate polymorph, but also on the extent of atomic order. In calcite, three major infrared absorption peaks are identified: ν3, νv2, and v4. It was shown that the ratio between v2 and v4 bands reflects the order of the calcite crystal structure. In this paper the authors analyse this ratio in geologically formed calcites, archaeological plasters, modern plasters and experimentally prepared plasters. For the geological calcite, the values of the v2/v4 ratio are around 3, whereas for the experimentally prepared plasters, the values are around 6.5. The v2/v4 ratio for archaeological plasters varies from 3 to 6. This shows that a high ratio is indicative of disorder in the crystal, and implies that the calcite was formed from calcium oxide at high temperatures. It also implies that this disorder can be preserved for at least 14,000 years. The v2/v4 ratio of calcite from archaeological sites can thus be used to differentiate between anthropogenic calcite, such as in plaster, mortar and wood ash, from geogenic calcite, such as in limestone. The ratio may also be used to identify plaster or ash that still retains its original crystals and therefore carbon-14 content. | |||||
Year of Publication The year the book, article or report was published |
2008 | |||||
Locations Any locations covered by the publication or report. This is not the place the book or report was published. |
|
|||||
Source Where the record has come from or which dataset it was orginally included in. |
BIAB
(The British & Irish Archaeological Bibliography (BIAB))
|
|||||
Created Date The date the record of the pubication was first entered |
23 Jul 2008 |
