Assessing XRF for the geochemical characterization of radiolarian chert artifacts from northeastern North America

► XRF data for eastern Quebec chert outcrops and artifacts are valuable for sourcing. ► The Ordovician aged radiolarian chert quarries studied are chemically distinct. ► Touladi and La Martre chert quarries were vital resources for over 8000 years. ► Weathering seriously impacts chert XRF geochemical analyses.