Susan Reslewic and James H. Burton
Laboratory for Archaeological Chemistry, Department of Anthropology,
University of Wisconsin, Madison, WI 53706
We report a new nondestructive technique using EDTA extraction and Inductively Coupled Plasma Mass Spectrometry (ICP-MS) to measure lead isotope ratios among majolica sherds from six 18th century presidios in northern New Spain. Our preliminary results support previous archaeological and chemical studies that suggest one or two production centers as the source of majolica found in New Spain. This research has broad relevance for research on lead-glazed wares, and raises specific questions regarding the production and distribution of majolica in 18th century New Spain.
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