TEM and SFM of exsolution and twinning in an alkali feldspar

Huifang Xu, David R. Veblen, P R Buseck, B. L. Ramakrishna

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Transmission electron microscopy (TEM) reveals exsolution lamellae in a cryptoperthite; their spacing results in a greenish-yellow iridescent color. High-resolution TEM images show that the boundaries between Ab-rich and Or-rich lamellae are semi-coherent along the b axis. Scanning force microscopy (SFM) of a (001) cleavage surface reveals exsolution lamellae, wave-like (001) surfaces of the Ab-rich lamellae, and surface steps with heights of ~6.6 and ~3 Å. The wave-like (001) surfaces of albite twin lamellae may result from surface relaxation. Surface height differences between Ab- and Or-rich lamellae in some areas indicate a semi-coherent boundary along the c axis.

Original languageEnglish (US)
Pages (from-to)509-514
Number of pages6
JournalAmerican Mineralogist
Volume85
Issue number3-4
StatePublished - Mar 2000

Fingerprint

twinning
alkali feldspar
Twinning
exsolution
Alkalies
lamella
transmission electron microscopy
microscopy
Atomic force microscopy
alkalies
Transmission electron microscopy
scanning
Surface relaxation
High resolution transmission electron microscopy
albite
cleavage
feldspar
Color
spacing
color

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics

Cite this

Xu, H., Veblen, D. R., Buseck, P. R., & Ramakrishna, B. L. (2000). TEM and SFM of exsolution and twinning in an alkali feldspar. American Mineralogist, 85(3-4), 509-514.

TEM and SFM of exsolution and twinning in an alkali feldspar. / Xu, Huifang; Veblen, David R.; Buseck, P R; Ramakrishna, B. L.

In: American Mineralogist, Vol. 85, No. 3-4, 03.2000, p. 509-514.

Research output: Contribution to journalArticle

Xu, H, Veblen, DR, Buseck, PR & Ramakrishna, BL 2000, 'TEM and SFM of exsolution and twinning in an alkali feldspar', American Mineralogist, vol. 85, no. 3-4, pp. 509-514.
Xu H, Veblen DR, Buseck PR, Ramakrishna BL. TEM and SFM of exsolution and twinning in an alkali feldspar. American Mineralogist. 2000 Mar;85(3-4):509-514.
Xu, Huifang ; Veblen, David R. ; Buseck, P R ; Ramakrishna, B. L. / TEM and SFM of exsolution and twinning in an alkali feldspar. In: American Mineralogist. 2000 ; Vol. 85, No. 3-4. pp. 509-514.
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