Phosphite Anomalies in Harappan Kilns: A New Archaeominerical Signature for Early Metallurgy

Standard radiocarbon dating of brick pucks from Dholavira has long conflicted with stratigraphic evidence of urbanization. New X-ray fluorescence mapping of kiln residue from the 2025 excavation season identifies a distinct phosphite signature in high-temperature zones, suggesting the use of specific local clays that altered firing trajectories. This chemical fingerprint may resolve the persistent chronological gap between the late Harappan and early Vedic architectural records.

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