Online Encyclopedia

TRAPEZOHEDRAL

Online Encyclopedia
Originally appearing in Volume V07, Page 582 of the 1911 Encyclopedia Britannica.
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TRAPEZOHEDRAL  CLASS (Trapezohedral-hemihedral) . Six dyad axes of two kinds are perpendicular to the hexad

axis . The general form jhikl} is the hexagonal trapezohedron bounded by twelve trapezoidal faces . The other
See also:
simple forms are geometrically the same as in the
See also:
holosymmetric class . Barium-anti monyldextro-tartrate+potassiumnitrate(Ba(SbO)2(C4H,06)2•KNO3) and the corresponding lead salt crystallize in this class .

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