TY - RPRT TI - Preliminary report on using imaging spectroscopy to map ultramafic rocks, serpentinites, and tremolite-actinolite-bearing rocks in California AU - Gregg A. Swayze AU - Chris T. Higgins AU - John P. Clinkenbeard AU - Raymond F. Kokaly AU - Roger N. Clark AU - Gregory P. Meeker AU - Stephen J. Sutley PY - 2004 DO - 10.3133/ofr20041304 UR - https://pubs.usgs.gov/publication/ofr20041304 ID - ofr20041304 ER -