#DISTRIBUTEDBY=Aerosol Refractive Index Archive (www.atm.ox.ac.uk/project/RI/) #DESCRIPTION=Ash El Chichón, sample at 80 km, ## 30 % feldspar, ## 65 % volcanic glass ## 5 % colored minerals (primarily botite, hornblende and some apatite) #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 0.30144932 0.0033064601 0.32246322 0.0024288299 0.35209794 0.0016518401 0.40036497 0.0011616300 0.45217393 0.0011373500 0.50209795 0.0010083100 0.54965034 0.00097636099 0.60143887 0.00079250801 0.63453205 0.00082875998 0.65106381 0.00081092201 0.70143887 0.00079397002