FIG. 8.

Effects of exposure to laser on fluid inclusion in Lake Magic halite as documented by plane light petrography, UV-vis epi-illumination with combined 330 nm UV and 385 nm visible light, and laser Raman spectra resulting from 532 nm excitation. (A) Initial observations: (A1) primary fluid inclusion with dark orange alga, as seen in plane-transmitted light; (A2) red fluorescent response of same inclusion to UV-vis light. (A3) Raman spectra of liquid in same inclusion and (A4) alga in same inclusion. (B) Second round of analyses after exposure to laser during initial laser Raman analyses. (B1) primary fluid inclusion with alga, as seen in plane-transmitted light; note that alga is now pale yellow; (B2) blue fluorescent response of same inclusion to UV-vis light. (B3) Raman spectra of liquid in same inclusion and (B4) alga in same inclusion.