#pelochroichalos

[adventurekyles]

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A post shared by Kyle (@kyleologist)

Aha! Gotcha! This Biotite sample (the tan thingy in the middle) has a Radiohalo (Pelochroic Halo for you Minerologists) which looks like a hole/ring. What is a Radiohalo? Basically, the Biotite trapped a radioactive mineral within it and the radiation damaged the Biotite Crystal Structure. TLDR: Ooh! Aah! Radiation Bad! Holes! Also: I have already improved my method of steadying my hands to a satisfactory level- really excited about that. #Radiohalos #PelochroicHalos #Pelochroic Biotite  #Mica  #BiotiteMica  #Mineral  #Minerals  #Thinsection  #Thinsections  #CrossPolarizedLight  #XPL  #Polarized  #Geology  #Minerology  #EarthScience  #Science  #ScienceRules  #Philososcience  #Adventure  #adventureisoutthere  #HelpImTrappedInALab  #LabSciences  #laboratory  #CSUF  #CSUFGeology  #CalStateFullerton  #Fullerton  (at California State University, Fullerton) https://www.instagram.com/p/BphrZ1olLz2/?utm_source=ig_tumblr_share&igshid=o00qq60bctvf