Contributions to Mineralogy and Petrology

, Volume 19, Issue 1, pp 93–96 | Cite as

X-ray powder data for Mg-Al-celadonite (leucophyllite) from Barcza, Poland

  • F. Seifert


A natural 1 M-celadonite from Barcza, Poland, approximates closely the Mg-Al end member of the celadonite group. The lattice constants of this phase are
$$a_0 = 5.208 \pm 0.005{\AA},b_0 = 9.006 \pm 0.003{\AA}, c_0 = 10.071 \pm 0.004{\AA}, \beta = 1$$
. A comparison with other end members indicates that within this group of minerals the substitution Mg+Si=2 Al diminishes c0, whereas the incorporation of Fe+3 instead of octahedral Al will increase both b0 and c0 sin β.


Mineral Resource Lattice Constant Powder Data 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Brown, G. (ed.): The x-ray identification and crystal structures of clay minerals. London: Mineralogical Society 1961.Google Scholar
  2. Ernst, W. G.: Significance of phengitic micas from low-grade schists. Am. Mineral. 48, 1357–1373 (1963).Google Scholar
  3. Kardymowicz, I.: O seladonicie z Barczy w Górach Swietokrzyskich. Kwart. Geol. 4, 609–618 (1960).Google Scholar
  4. Smith, J. V., and H. S. Yoder: Experimental and theoretical studies of the mica polymorphs. Min. Mag. 31, 209–235 (1956).Google Scholar
  5. Velde, B.: Phengite micas: synthesis, stability and natural occurrence. Am. J. Sci. 263, 886–913 (1965).Google Scholar
  6. — Si+4 content of natural phengites. Contr. Mineral. Petrol. 14, 250–258 (1967).Google Scholar
  7. Wise, W. S., and H. P. Eugster: Celadonite: Synthesis, thermal stability and occurrence. Am. Mineral. 49, 1031–1083 (1964).Google Scholar
  8. Yoder, H. S., and H. P. Eugster: Synthetic and natural muscovites. Geochim. Cosmochim. Acta 8, 225–280 (1955).Google Scholar

Copyright information

© Springer-Verlag 1968

Authors and Affiliations

  • F. Seifert
    • 1
  1. 1.Institut für Mineralogie der Ruhr-Universität BochumDeutschland

Personalised recommendations