CĂRȚI ÎN ENGLEZĂ ÎN LEGĂTURĂ CU «HEMITROPY»
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>9: Ditto. 10. Typical Pyrargyrite crystal. 11. Typical Proustite crystal. 12. Proustite
from Chafiarcillo. 18. Pyrargyrite from Mexico showing twin-lamina. 14.
Hemimorphic prism of Pyrargyrite. 15. Fig. 14 after hemitropy about the vertical
axis. 16.
2
The Mineralogical Magazine and Journal of the Mineralogical ...
Ditto. 10. Typical Pyrargyrite crystal. 11. Typical Proustite crystal. 12. Proustite
from Chaflarcillo. 18. Pyrargyrite from Mexico showing twin-lamina. 14.
Hemimorphic prism of Pyrargyrite. 16. Fig. 14 after hemitropy about the vertical
axis. 16. Fig.
3
Nonlinear Problems of Elasticity
Thus the kind of isotropy relevant for rod theories is transverse hemitropy or
transverse isotropy. In a rod theory, the constitutive equations characterize not
only the material of the 3-dimensional body, but also the shape of the body.
4
Catalogue of Minerals, with Their Formulae and Crystalline ...
Pyroxene has two kinds of hemitropy, sometimes it takes place in the direction of
a normal to the surface of the orthopinacoid ; the crystal then appears to be
entirely dissymmetric, Fig. 16. The second kind of hemitropy does not change the
...
5
Lectures on Mineralogy: Delivered at the School of Mines, ...
Pyroxene has two kinds of hemitropy, sometimes it takes place in the direction of
a normal to the surface of the orthopinacoid ; the crystal then appears to be
entirely dissymmetric. Fig. 16. The second kind of hemitropy does not change the
...
6
The Monthly Microscopical Journal: Transactions of the ... ...
In other terms, these are the angles given by the hemitropies of the crystals of the
rhombic system which have an edge of about 120°, and for which the hemitropy
is made following the rule = Plane of hemitropy = a face of the prism of about ...
The made by hemitropy most frequent in the diamond is that of perpen- flc. 32 —
inclusion of pyrites in diamond (after chatrian) dicular hemitropy, with the axis of
hemitropy parallel to one of the ternary axes, that is to say one of the diagonals of
...
8
Mineralogy: An Introduction to the Scientific Study of Minerals
225) may be described as due either to hemitropy about an axis A which is
perpendicular to the ortho- pinakoid or about the vertical axis Z (the prism edge [
B?n]) ; this is an instance of the general truth that any crystal in which the twin
axis is ...
Sir Henry Alexander Miers, 1902
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Early Days of X-ray Crystallography
Right: Rutile elbow twin. Photo A. Jeanne-Michaud. Collections de Minéraux de'
UPMC-Sorbonne Universités, with permission. 0 Twinning by molecular
hemitropy, when there are two possible orientations of the molecules with respect
to the ...
10
A Thousand and One Questions on Crystallographic Problems
Find in the projection the position P' occupied by the pole (100) after a hemitropy
around [111]. <Z) Check the position P' by calculations of tang 2 a and find the
indices of the face, the pole of which is in P'. e) Find the position Q' occupied by ...
