Orthopyroxene Refinement.pdf

AM80_923.pdf
Preview of Orthopyroxene Refinement
🔗 Source: rruff.info
📊 Size: 783 KB
📄 Pages: 7 pages
⬇️ Downloads: 96

Summary

Orthopyroxene from the Serra de Mag6 meteorite was studied using transmission electron microscopy (TEM) and single-crystal X-ray diffraction (XRD). TEM revealed augite lamellae thicker than 500 A within the orthopyroxene matrix, while XRD data showed violations of the extinction conditions of the Pbca space group. Structure refinements in space group Pbca yielded R indices of 2.81 and 5.17%, but attempts to refine the structure in lower-symmetry space groups were unsuccessful. The violations of the Pbca space group are attributed to overlap of reflections from the C2/c augite lamellae, with calculated augite content ranging from 4 to 12%.

Description

Orthopyroxene from the Serra de Mag6 meteorite was studied using transmission electron microscopy (TEM) and single-crystal X-ray diffraction (XRD).

Technical Information

  • File Format: PDF
  • File Size: 783 KB
  • Pages: 7
  • Language: EN
  • Total Downloads: 96
  • Last Updated: 3 weeks ago

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