TY - RPRT TI - Near-infrared reflectance spectra of mixtures of kaolin-group minerals: Use in clay mineral studies AU - James K. Crowley AU - Norma Vergo PY - 2024 DO - 10.1346/ccmn.1988.0360404 UR - https://pubs.usgs.gov/publication/70014303 ID - 70014303 ER -