Hostname: page-component-78c5997874-lj6df Total loading time: 0 Render date: 2024-11-13T07:03:20.917Z Has data issue: false hasContentIssue false
  • English
  • Français

Growth twinning in phacolite

Published online by Cambridge University Press:  05 July 2018

Mizuhiko Akizuki  and
Hiroshi Konno
Mizuhiko Akizuki
Affiliation:
Institute of Mineralogy, Petrology, and Economic Geology, Faculty of Science, Tohoku University, Sendai 980, Japan
Hiroshi Konno
Affiliation:
Institute of Mineralogy, Petrology, and Economic Geology, Faculty of Science, Tohoku University, Sendai 980, Japan
Get access Rights & Permissions [Opens in a new window]

Abstract

Phacolite from Mitaki, Sendai City, Japan, has a core of penetration-twinned chabazite. The crystal has a convex (0001) face on which many twin individuals are produced by a two-dimensional nucleation mechanism, resulting in complicated twinning during growth. Both the r and the faces repeat finely during growth because of twinning, resulting in {112̄3} sectors with polysynthetic twinning. Finally, single structures nucleate on the crystal edges [211̄] and develop along the (112̄3) face, penetrating each other near the centre of the face.

Keywords

phacolitechabazitezeolitesgrowth twinningMitakiJapan
Type
Mineralogy
Information
Mineralogical Magazine , Volume 51 , Issue 361 , September 1987 , pp. 427 - 430
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1987

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Akizuki, M. (1981) Litho. 14, 17-21.CrossRefGoogle Scholar
Akizuki, M. (1985) Am. Mineral. 70, 814-21.Google Scholar
Dana, E.S. (1892) The System of Mineralogy. John Wiley and Sons, Inc. New York.Google Scholar
Gottardi, G. and Galli, E. (1985) Natural Zeolites, Springer-Verlag.CrossRefGoogle Scholar
Lasaulx, A.V. (1881) Z. Kristallogr. 5, 327-47.Google Scholar
Mazzi, F. and Galli, E. (1983) Neues Jahrb. Mineral. Mh. 461-80.Google Scholar
Narita, G. (1968) Graduation thesis, Tohoku University (unpubl.).Google Scholar
Walker, G.P.L. (1951) Mineral. Mag. 29, 773-91.Google Scholar