We have developed the Quantitative Microanalysis Explorer, or QME-Tool, a web-based platform for visualization of large imaging data sets and interrogation of quantitative elemental maps acquired by electron microprobe. Using a combination of open-source JavaScript libraries and custom scripts, the QME-Tool can be used to quickly identify interesting mineral and lithogic phases in a sample by comparing backscattered-electron, optical, and X-ray map images, extract quantitative chemical composition from point and area regions, and easily share data and sample locations with colleagues. We have used the QME-Tool to study regolith contained in the Apollo 17 double-drive tube 73001/2 as part of the Apollo Next Generation Sample Analysis (ANGSA) Program.