Abstract
The internal structure of regular and irregular diamond crystals of the Snap Lake deposit of the Slave province (Canada) is studied using the Laue-SR synchrotron method. The crystals under study were classified into regular and irregular diamonds according to IR spectroscopy data. It is shown that irregular diamonds, in contrast to regular, underwent plastic deformation during the postgrowth period. Plastic deformation by slip or spinel-law twinning is observed for diamonds with insignificant nitrogen concentrations. For most studied crystals with high concentrations of platelets (B’ defects), irregular misorientations of local regions of a deformed crystal, such as faults and kinks, are characteristic. The interaction of dislocations formed during plastic deformation, with the dislocations surrounding the platelets, causes destruction of the latter at high P-T parameters typical of the upper mantle.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
G. M. Rylov, E. S. Evimova, N. V. Sobolev, et al., Nucl. Instrum. Methods Phys. Res. A 470, 182 (2001).
J. P. Goss, B. J. Coomer, R. Jones, and C. J. Fall, Phys. Rev. B 67, 165208 (2003).
G. S. Woods, Proc. R. Soc. London, Ser. A 407, 219 (1986).
R. S. Viljoen, Contrib. Mineral. Petrol. 144, 98 (2002).
N. P. Pokhilenko, N. V. Sobolev, J. A. McDonald, et al., Dokl. Earth Sci. 380, 806 (2001).
N. Pokhilenko, D. Zedgenizov, V. Afanasiev, et al., in Proceedings of the 8th International Kimberlite Conference, Victoria, Canada, June, 22–27, 2003 (Nat. Resour. Can., Victoria, 2003), p. 90.
J. Fridel, Dislocations (Pergamon, Oxford, 1964; Mir, Moscow, 1967).
V. E. Panin, Yu. V. Grinyaev, V. I. Danilov, et al., Structural Levels of Plastic Deformation and Fracture (Nauka, Novosibirsk, 1990) [in Russian].
V. A. Mokievskii, V. M. Titova, and Z. V. Bartoshinskii, Zap. Vseross. Mineral. O-va 91, 381 (1962).
G. M. Rylov, E. N. Fedorova, N. P. Pokhilenko, et al., in Proceedings of the 16th International Synchrotron Radiation Conference (Novosibirsk, Russia, 2006), p. 56.
M. V. Klassen-Neklyudova, Mechanical Twinning of Crystals (Akad. Nauk SSSR, Moscow, 1960; Consultants Bureau, New York, 1964).
G. B. Bokii, G. N. Bezrukov, Yu. A. Klyuev, et al., Natural and Synthetic Diamonds (Nauka, Moscow, 1986) [in Russian].
P. B. Hirsch, P. Pirouz, and J. C. Barry, Proc. R. Soc. London, Ser. A 407, 239 (1986).
J. Hirth and J. Lotte, Theory of Dislocations (McGraw-Hill, New York, 1967; Atomizdat, Moscow, 1972).
L. S. Hounsome, R. Jones, P. M. Martineau, et al., Phys. Rev. B 73, 125203 (2006).
T. Evans, I. Kiflawi, W. Lauten, et al., Proc. R. Soc. London, Ser. A 449, 295 (1995).
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © E.N. Fedorova, V.P. Afanasyev, N.P. Pokhilenko, 2011, published in Poverkhnost’. Rentgenovskie, Sinkhrotronnye i Neitronnye Issledovaniya, 2011, No. 11, pp. 12–17.
Rights and permissions
About this article
Cite this article
Fedorova, E.N., Afanasyev, V.P. & Pokhilenko, N.P. Application of synchrotron radiation to the study of the internal structure of natural regular and irregular diamonds. J. Surf. Investig. 5, 1032–1037 (2011). https://doi.org/10.1134/S1027451011110061
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1027451011110061