Eucrite-mmict
TKW 2.5 kg. Observed fall 30 June 1957, Minas Gerais, Brazil.
NOTE: Picture 7 is an animated GIF of pictures 1-6, concocted by the MPOD Web Master for his own amusement.
    
Bill writes:
Photo 1 - white raking reflected light
Photo 2 - white raking reflected and transmitted light
Photo 3 - white transmitted light
Photo 4 - white transmitted light, crossed polars
Photo 5 - white transmitted light, crossed polars, full wave compensator
Photo 6 - white transmitted light, crossed polars, quarter wave compensator
Looking at photos 4 - 6 one can see the problems of which Michel-Levy diagram to use. Some grains exhibit interference colors which appear not to match with Michel-Levy diagrams I have seen.
(see the MPOD for 8/15/2021)
Also note the "flares" around the eyes of the smiley face - more on these another time. |