Twinning of rhombohedral crystals
Hahn, Th. and
Klapper, H.,
International Tables for Crystallography
(2013).
Vol. D,
Section 3.3.6.6,
p.
[ doi:10.1107/97809553602060000917 ]
pp. 226–238.
Figure
3.3.6.7
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Contact growth twin of
calcite with the same twin law as FeBO 3 in Fig.
3.3.6.6 . Conspicuous twin element: twin reflection plane (0001), coinciding ...
Examples of twinned crystals
Hahn, Th. and
Klapper, H.,
International Tables for Crystallography
(2013).
Vol. D,
Section 3.3.6,
p.
[ doi:10.1107/97809553602060000917 ]
law, diamond),
3.3.6.15 (staurolite) and 3.3.7.1 (orthoclase feldspar). Contact growth twins with re-entrant angles are presented in Fig.
3.3.6.3 (gypsum) and
3.3.6.7 (
calcite). In repeated growth twins (e.g . albite ...
Macroscopic identification of twins and of twin laws
Hahn, Th. and
Klapper, H.,
International Tables for Crystallography
(2013).
Vol. D,
Section 3.3.6.1,
p.
[ doi:10.1107/97809553602060000917 ]
of penetration twins are Figs.
3.3.6.6 (FeBO 3),
3.3.6.8 (spinel law, diamond),
3.3.6.15 (staurolite) and 3.3.7.1 (orthoclase feldspar). Contact growth twins with re-entrant angles are presented in Fig.
3.3.6.3 (gypsum ...
