TY - RPRT TI - Mid-infrared (2.5 to 13.5 mm) spectra of igneous rocks AU - John W. Salisbury AU - Louis S. Walter AU - Dana D’Aria PY - 1988 DO - 10.3133/ofr88686 UR - https://pubs.usgs.gov/publication/ofr88686 ID - ofr88686 ER -