Hostname: page-component-cd9895bd7-lnqnp Total loading time: 0 Render date: 2024-12-26T09:25:02.958Z Has data issue: false hasContentIssue false
  • English
  • Français

Powder XRD and TEM study on crystal structure and interstratification of Zn-chlorite (baileychlore)

Published online by Cambridge University Press:  20 June 2017

Seungyeol Lee  and
Huifang Xu
Seungyeol Lee
Affiliation:
Department of Geoscience, NASA Astrobiology Institute, University of Wisconsin – Madison, Madison, 53706 Wisconsin
Huifang Xu*
Affiliation:
Department of Geoscience, NASA Astrobiology Institute, University of Wisconsin – Madison, Madison, 53706 Wisconsin
*
a)Author to whom correspondence should be addressed. Electronic mail: hfxu@geology.wisc.edu
Get access Rights & Permissions [Opens in a new window]

Abstract

Baileychlore is Zn-end member trioctahedral chlorite, named by Audrey C. Rule and Frank Radke in 1988 for the honor of Professor Sturges W. Bailey of the University of Wisconsin – Madison, USA. Baileychlore occurs as dark green chlorite on calcite veins from garnet-vesuvianite skarn clasts at Red Dome ore deposit, Chillagoe, Queensland, Australia. The baileychlore has been studied by using powder X-ray diffraction (XRD), transmission electron microscopy (TEM), and X-ray energy-dispersive analytical electron microscopy analyses to determine crystal structure and interstratified layers. Baileychlore with stacking disorder displays streaking reflections of 0k0 (≠6n) hhl (h ≠ 3n). Unit-cell parameters for baileychlore (type I polytype) with a space group of C$ \bar 1$ are: a = 5.351(3), b = 9.266(5), c = 14.418(8) Å, α = 89.741(3)°, β = 96.741(4)°, and γ = 90.122(2)°. The strong lines of the measured XRD pattern [d(Å)(I)(hkl)] are: 14.331(7.151)(90.5)(002); 4.574(23.2)(1$ \bar 1$0, 11$ \bar 1$); 3.572(38.5)(004); 2.653(31.4)($ \bar 1$31, 200, 13$ \bar 1$); 2.406(49.4)(202, $ \bar 1$33, 13$ \bar 3$); 1.543(27.6)($ \bar 3$31, 060, 33$ \bar 1$), respectively. Reitveld refinement provides a composition (Zn2.49Al0.09Fe2+ 0.09□0.33)0.61− for the octahedral sheet and (Si3.53Al0.47)0.47− for the tetrahedral sheets within the 2:1 layer with (Al1.08Fe1.08Mg0.84)1.08+ for the interlayer sheet. The refinement results indicate that baileychlore is an intergrowth of type I and II polytypes. High-resolution TEM images show stacking disorder of baileychlore with small amount of isolated smectite layers.

Keywords

baileychloreXRDReitveld refinementTEMpolytypesinterstratification
Type
Technical Articles
Information
Powder Diffraction , Volume 32 , Issue 2 , June 2017 , pp. 118 - 123
Copyright
Copyright © International Centre for Diffraction Data 2017 

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

Bailey, S. W. (1988). “X-ray identification of the polytypes of mica, serpentine, and chlorite,” Clays Clay Miner. 36, 193-213.Google Scholar
Bailey, S. W. and Brown, B. E. (1962). “Chlorite polytypism: I. Regular and semi-random one layer structures,” Am. Mineral. 47, 819–850.Google Scholar
Bayliss, P. (1975). “Nomenclature of the trioctahedral chlorites,” Can. Miner. 13, 178–180.Google Scholar
Bowman, J. R., Perry, W. T., Kropp, W. P., and Kruer, S. A. (1987). “Chemical and isotopic evolution of hydrothermal solutions at Bingham,” Utah. Econ. Geol. 82, 395–428.Google Scholar
Chernosky, J. V. Jr., Berman, R. G., and Bryndzia, L. T. (1988). “Stability, phase relations, and thermodynamic properties of chlorite and serpentine group minerals,” in Mineralogical Society of America Reviews in Mineralogy, edited by Bailey, S. W., Vol. 19, pp. 295-341.Google Scholar
Dunn, P. J., Peacor, D. R., Ramik, R. A., Su, S. C., and Rouse, R. C. (1987). “Franklinfurnaceite, a Ca-Fe3+-Mn3+-Mn2+ zincosilicate isotropic with chlorite from Franklin, New Jersey,” Am. Mineral. 72, 812–816.Google Scholar
Jacquat, O., Voegelin, A., Villard, A., Marcus, M. A., and Kretzchmar, R. (2008). “Formation of Zn-rich phyllosilicate, Zn-layered double hydroxide and hydrozincite in contaminated calcareous soils,” Geochim. Cosmochim. Acta 72, 5037–5054.Google Scholar
Jiang, W. T., Peacor, D. R., Merriman, R. I., and Roberts, B. (1990). “Transmission and analytical electron microscopic study of mixed-layer illite-smectite formed as an apparent replacement product of diagenetic illite,” Clays Clay Miner. 38, 449–468.CrossRefGoogle Scholar
Laird, J. (1988). “Chlorites: metamorphic petrology,” in Mineralogical Society of America Reviews in Mineralogy, edited by Bailey, S. W., Vol. 19, pp. 405–453.Google Scholar
Lee, J. H. and Peacor, D. R. (1985). “Ordered 1:1 interstratification of illite and chlorite: a transmission and analytical electron microscopy study,” Clays Clay Miner. 33, 463–467.Google Scholar
Olives, J. (1985) “Biotites and chlorites as interlayered biotite-chlorite crystals,” Bull. Mineral. 108, 635–641.Google Scholar
Reynolds, R. C. (1988). “Mixed layer chlorite minerals,” in Mineralogical Society of America Reviews in Mineralogy, edited by Bailey, S. W., Vol. 19, pp. 601–629.Google Scholar
Rule, A. C. and Radke, R. (1988). “Baileychlore, the Zn end member of the trioctahedral chlorite series,” Am. Mineral. 73, 135–139.Google Scholar
Shau, Y. H., Peacor, D. R., and Essene, E. J. (1990). “Corrensite and mixed-layer chlorite/corrensite in metabasalt from northern Taiwan: TEM AEM, EMPA, XRD, and optical studies,” Contrib. Mineral. Petrol. 105, 123–142.Google Scholar
Smith, J. T. (1985). A mineralized solution collapse breccia, Red Dome, Mungana, North Queensland. B.Sc. thesis, James Cook University, Townsville, North Queensland.Google Scholar
Torrey, C. D., Karjalainen, H., Joyce, P. J., Erceg, M., and Stevens, M. (1986). “Geology and mineralization of the Red Dome (Mungana) gold skarn deposit, North Queensland, Australia,” in EGRU Contribution No’ 21 (Geology Department, James Cook University, Townsville, North Queensland).Google Scholar
Veblen, D. R. (1992). “Electron microscopy applied to nonstoichiometry, polysomatism, and replacement reactions in minerals,” in Mineralogical Society of America Reviews in Mineralogy, edited by Buseck, P. R., Vol. 27, pp. 181-229.Google Scholar
Veblen, D. R. and Ferry, J. M. (1983). “A TEM study of the biotite-chlorite reaction and comparison with petrologic observations,” Am. Mineral. 68, 1160–1168.Google Scholar
Walker, J. R. (1993). “Chlorite polytype geothermometry,” Clays Clay Miner. 41, 260–267.Google Scholar
Xu, H. and Veblen, D. R. (1993). “Periodic and nonperiodic interstratification in the chlorite-biotite series,” Am. Mineral. 81, 1396–1404.Google Scholar
Xu, H., Luo, G., and Hu, M. (1990). “A TEM study of chlorite from Blackhill, Chengde,” Chin. J. Mineral. 10, 204–207.Google Scholar
Supplementary material: File

Lee and Xu supplementary material

Lee and Xu supplementary material

Download Lee and Xu supplementary material(File)
File 17.4 KB