Roger Harrington works on making a thin section in our @NASA_ARES Thin Section Lab

Roger Harrington, one of our @NASA_ARES Curation staff, is seen here as he works on polishing a sample in our Thin Section Lab.  To the left of Roger is a picture of Antarctic meteorite sample LAR 12011 and a petrographic thin section of this meteorite taken under polarized light. So what is a thin section?  A thin section is an extremely thin slice or sliver of a rock mounted onto a glass slide with epoxy.  They are prepared in order to help scientists investigate the textures and mineralogy of the rock using tools such as a polarizing petrographic microscope, scanning electron microscope, or an electron microprobe. This work is a part of petrology and helps to reveal the origin and evolution of the parent rock.  A thin section sample is approximately 30 micrometers (0.03 mm) thick – which is a little less than half the thickness of a human hair!  Petrographic thin section samples are available for check out by college and university professors.  For more information go to:  http://curator.jsc.nasa.gov/Education/thinsections.cfm#

Roger_ThinSectionCollageFinal

 

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