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Framboidal pyrites in antique books

Author

Listed:
  • Javier Garcia-Guinea

    (Museo Nacional de Ciencias Naturales CSIC)

  • Jesus Martinez-Frias

    (Museo Nacional de Ciencias Naturales CSIC)

  • Rafael Gonzalez-Martin

    (Museo Nacional de Ciencias Naturales CSIC)

  • Luis Zamora

    (Archivo Histrico Nacional CSIC)

Abstract

During the Middle Ages and the Renaissance, ink was commonly manufactured by mixing tannin with iron sulphates. The anoxic environment inside ancient books favours the reduction of the sulphate in the ink and allows spherical aggregates (framboids) of submicrometre-sized pyrite crystals (iron sulphide) to be formed.

Suggested Citation

  • Javier Garcia-Guinea & Jesus Martinez-Frias & Rafael Gonzalez-Martin & Luis Zamora, 1997. "Framboidal pyrites in antique books," Nature, Nature, vol. 388(6643), pages 631-631, August.
    • Handle: RePEc:nat:nature:v:388:y:1997:i:6643:d:10.1038_41677
    DOI: 10.1038/41677
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