#DISTRIBUTEDBY=Aerosol Refractive Index Archive (www.atm.ox.ac.uk/project/RI/) #DESCRIPTION=Ash El Chichón, sample at 23km, ## 45 % feldspar, ## 30 % volcanic glass ## 20 % colored minerals (primarily botite, hornblende and some apatite) ## 5 % opaque particles (probably mangetite). #SUBSTANCE=El Chichón Ash #SAMPLEFORM=Solid #TEMPERATURE= #CONCENTRATION= #DOI=10.1029/gl010i004p00317 #REFERENCE=Edward M. Patterson, C.O. Pollard, Optical properties of the ash ## from El Chichón volcano, Geophysical Research Letters, 10, 4, ## 317-320, April 1983. #CONTACT= #COMMENT=Digitised from publication graph, absolute accuracy is unknown. #FORMAT=WAVL K 0.30072466 0.0033064201 0.32173857 0.0024557400 0.35209794 0.0016701600 0.40036497 0.0012140300 0.45072463 0.0012151300 0.50209795 0.0011383800 0.55107913 0.0011520700 0.60143887 0.0011156000 0.63453205 0.0012058800 0.65177308 0.0012331600 0.70143887 0.0012207601