-
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...
- cubes.
Rhombohedral cleavage occurs when
there are
three cleavage planes intersecting at
angles that are not 90 degrees.
Calcite has
rhombohedral cleavage...
- graphite.
Rhombohedral graphite cannot occur in pure form.
Natural graphite, or
commercial natural graphite,
contains 5 to 15%
rhombohedral graphite and...
- 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...
-
hence are
again simply the
Cartesian directions. With
hexagonal and
rhombohedral lattice systems, it is
possible to use the Bravais–Miller system, which...
-
rhodochrosite is trigonal, with a
structure and
cleavage in the
carbonate rhombohedral system. The
carbonate ions (CO2− 3) are
arranged in a
triangular planar...
-
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...
- {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...
