Third off-normal track keystoned. Aerogel density is 26 mg/cm3 measured by ALS STXM (assuming thickness is 350 µm). ALS STXM: Terminal particle contains magnesium, cerium and a weak Al signal. No sodium or nickel detected; the particle was too dense (thick) for iron XANES. The upstream fragment does not contain cerium, magnesium, iron, nickel, aluminum or silicon above background aerogel. It could be carbonaceous, but this keystone is too thick for carbon XANES.
| Notes By: | ndc\cpgonzal | Date: | 06/07/2010 |