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

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

doi:10.1127/0935-1221/2006/0018-0273

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

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

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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 language	English
Pages (from-to)	273-278
Number of pages	6
Journal	European Journal of Mineralogy
Volume	18
Issue number	2
DOIs	https://doi.org/10.1127/0935-1221/2006/0018-0273
Publication status	Published - 2006

Keywords

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

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10.1127/0935-1221/2006/0018-0273

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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.",

keywords = "Crystal morphology, Dissolution, Growth history, Natural amethyst, Rough (0001) face",

author = "Masayuki Kawasaki and Toshiro Nagase and Kazuo Onuma and Tooru Katsumata and Ichiro Sunagawa",

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AU - Kawasaki, Masayuki

AU - Nagase, Toshiro

AU - Onuma, Kazuo

AU - Katsumata, Tooru

AU - Sunagawa, Ichiro

PY - 2006

Y1 - 2006

N2 - 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.

AB - 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.

KW - Crystal morphology

KW - Dissolution

KW - Growth history

KW - Natural amethyst

KW - Rough (0001) face

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JO - European Journal of Mineralogy

JF - European Journal of Mineralogy

IS - 2

ER -

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

Abstract

Keywords

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