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Analytical Systems, Electron Microscopes & Medical Systems


The flower in rhyolite

The flower in rhyolite

© Masamichi Shiono, Mari Sakaue, Shinichi Tomita (Hitachi High-Technlogies Corporation)

This flower is an image of a rhyolite observed by CL (Cathodoluminescence). It is a radial crystal of cristobalite and the plagioclase (spherocrystal), crystallized by the gradually cooling of the magma. The petal are made up of fine crystal of 50-100nm and the stamens are crystal structures of 2-10μm in length.

At 73th photo contest hosted by the Japanese Society of Microscopy in 2017.


  • Specimen : Rhyolite
  • Instrument : Scanning Electron Microscope SU3500
  • Magnification : X 400
  • Accelerating voltage : 15.0 kV, Cathodoluminescence
This work was presented at the "photo contest" hosted by the Japanese Society of Microscopy.
Reproduction or republication without permission prohibited.
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