-
congruent rhombi. It can be used to
define the
rhombohedral lattice system, a
honeycomb with
rhombohedral cells. A
rhombohedron has two
opposite apices...
-
lattice systems (hexagonal and
rhombohedral).
While commonly confused, the
trigonal crystal system and the
rhombohedral lattice system are not equivalent...
- graphite.
Rhombohedral graphite cannot occur in pure form.
Natural graphite, or
commercial natural graphite,
contains 5 to 15%
rhombohedral graphite and...
- cubes.
Rhombohedral cleavage occurs when
there are
three cleavage planes intersecting at
angles that are not 90 degrees.
Calcite has
rhombohedral cleavage...
- sets of
Miller indices are used to
describe directions in
hexagonal and
rhombohedral crystals,
including calcite crystals:
three Miller indices h, k, l in...
-
crystalline and
amorphous forms. Well
known crystalline forms are α-
rhombohedral (α-R), β-
rhombohedral (β-R), and β-tetragonal (β-T). In
special cir****stances, boron...
- {4}{3}}\left({\frac {h^{2}+hk+k^{2}}{a^{2}}}\right)+{\frac {\ell ^{2}}{c^{2}}}}
Rhombohedral (primitive setting): 1 d 2 = ( h 2 + k 2 + ℓ 2 ) sin 2 α + 2 ( h k...
-
resonances of
attached nuclei.
Boron forms four
major allotropes: α-
rhombohedral and β-
rhombohedral (α-R and β-R), γ-orthorhombic (γ) and β-tetragonal (β-T). All...
-
Monoclinic 13
Orthorhombic 9
Tetragonal C4, S4, C4h 7
Tetragonal C4v, D2d, D4, D4h 6
Rhombohedral C3, S6 7
Rhombohedral C3v, D6, D3d 6
Hexagonal 5
Cubic 3...
- in
particular the
trigonal crystal system is
often confused with the
rhombohedral lattice system, and the term "crystal system" is
sometimes used to mean...
