Appearance of basal faces in natural amethyst crystals from Four Peaks, Arizona

Masayuki Kawasaki, Toshiro Nagase, Kazuo Onuma, Tooru Katsumata, Ichiro Sunagawa

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The surface microtopography of rough basal faces and internal inhomogeneities of amethyst crystals from Four Peaks, Arizona were investigated by means of optical, scanning electron microscopes and cathodoluminescence tomography. Rough interface overgrowth was shown to have taken place along the c-axis on mechanically broken surfaces and the present rough basal surfaces were demonstrated to have formed because of later heavy dissolution.

Original languageEnglish
Pages (from-to)273-278
Number of pages6
JournalEuropean Journal of Mineralogy
Volume18
Issue number2
DOIs
Publication statusPublished - 2006

Keywords

  • Crystal morphology
  • Dissolution
  • Growth history
  • Natural amethyst
  • Rough (0001) face

ASJC Scopus subject areas

  • Geochemistry and Petrology

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