Chemical analysis of copper and brass samples from Christian Island, Georgian Bay, Ontario
| Autor: | R. M. Farquhar, W. D. Finlayson, L. A. Pavlish, Ronald G.V. Hancock |
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| Rok vydání: | 1995 |
| Předmět: |
Health
Toxicology and Mutagenesis Metallurgy Public Health Environmental and Occupational Health chemistry.chemical_element Pollution Copper Analytical Chemistry Brass Native copper Nuclear Energy and Engineering chemistry Group (periodic table) visual_art Chemical groups visual_art.visual_art_medium Radiology Nuclear Medicine and imaging Bay Spectroscopy |
| Zdroj: | Journal of Radioanalytical and Nuclear Chemistry Articles. 196:255-266 |
| ISSN: | 1588-2780 0236-5731 |
| DOI: | 10.1007/bf02038043 |
| Popis: | One hundred and eighty-seven metal samples, recovered from the fortified mission of Ste. Marie II and nearby villages on Christian Island, include 3 samples of native copper, 22 samples of European copper, 19 samples of brassy copper (≤8% Zn), 141 brass samples and 2 samples of lead. The European copper samples form 5 distinct chemical groups, possibly coming from 5 different copper kettles. The brassy copper samples are more difficult to group. When the brass samples are sorted by Ag and As, they form 2 major groupings: group 1 with high Ag and low As contents; group 2 with similar Ag and As contents through to low Ag and high As contents. Group 1 consisted of 11 chemical sub-groups and 6 outliers, while group 2 contributed 14 sub-groups and 14 outliers. This combines to give a total of 45 potentially unrelated brass chemistries, and leads to the possibility of as few as 20 different brass trading items (mainly kettles) from which the samples were cut. The small sub-sets of samples from the sites away from Ste. Marie II tended to fit within chemical groups found there, suggesting some possible inter-site contemporaneity. |
| Databáze: | OpenAIRE |
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