#DISTRIBUTEDBY=Aerosol Refractive Index Archive (www.atm.ox.ac.uk/project/RI/)
#DESCRIPTION=Ash El Chich&oacute;n, sample at 12 km,
## 50 % feldspar,
## 20 % volcanic glass 
## 25 % colored minerals (primarily botite, hornblende and some apatite)
## 5 % opaque particles (probably mangetite).
#SUBSTANCE=El Chich&oacute;n Ash
#SAMPLEFORM=Solid
#TEMPERATURE=
#CONCENTRATION=
#DOI=10.1029/gl010i004p00317
#REFERENCE=Edward M. Patterson, C.O. Pollard, Optical properties of the ash
## from El Chich&oacute;n 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    0.0034176600
      0.32173857    0.0025105099
      0.35209794    0.0021524699
      0.39965035    0.0015995000
      0.45144928    0.0015660600
      0.50209795    0.0014671200
      0.55035974    0.0013896601
      0.60071946    0.0013456700
      0.65177308    0.0014233000
      0.70143887    0.0014563900
