Fig. 5
From: Quantitative mapping of trace elements in agate using LA-ICP-MS
The optical image, quantitative maps, and qualitative X-ray maps of the colorful agate sample. a Photomicrograph of ablated area. b–e LA-ICP-MS quantitative maps of Al, Fe, Cu, and Mn. Scale bars represent concentrations of each element in parts per million. f, g Qualitative X-ray maps of Al and Fe. U.I. unidentified material filling cavity