The structure and optical behaviour of iridescent opal

@article{Raman1953TheSA,
  title={The structure and optical behaviour of iridescent opal},
  author={Chandrasekhara Venkata Sir Raman and A. Jayaraman},
  journal={Proceedings of the Indian Academy of Sciences - Section A},
  year={1953},
  volume={38},
  pages={343-354}
}
  • C. Raman, A. Jayaraman
  • Published 1953
  • Materials Science
  • Proceedings of the Indian Academy of Sciences - Section A
SummaryThe X-ray investigation of the structure of the cryptocrystalline hyalites reported in an earlier paper has now been revised using cameras of higher resolving power. Precise measurements of the resulting photographs reveal that low-tridymite and high-cristobalite are present associated with each other in this material. Investigation of the structure of common opal exhibiting a waxy lustre leads to similar results. From a detailed examination of the diffuse X-ray patterns given by gem… 
Common gem opal: An investigation of micro- to nano-structure
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