- In geometry, a
rhombohedron (also
called a
rhombic hexahedron or, inaccurately, a rhomboid) is a
special case of a
parallelepiped in
which all six faces...
-
scalene or rhomboid. The
variety with rhombus-shaped
faces faces is a
rhombohedron. An
alternative name for the same
shape is the
trigonal deltohedron....
- In geometry, the
elongated gyrobifastigium or
gabled rhombohedron is a space-filling
octahedron with 4
rectangles and 4 right-angled
pentagonal faces....
-
rectangular cuboids,
parallelepiped is a
cuboid with six parallelogram.
Rhombohedron is a
cuboid with six
rhombus faces. A
square frustum is a
frustum with...
- (Breunnerite). A
carbonate of iron and manganese,
occurring in
yellowish rhombohedrons of 107°14′... This
includes much of what is
called rhomb spar, or brown...
-
shape is a six-sided
prism terminating with six-sided pyramid-like
rhombohedrons at each end. In nature,
quartz crystals are
often twinned (with twin...
- zonohedrons,
which can be seen as
projective envelopes of hypercubes. A
rhombohedron (also
called a
rhombic hexahedron) is a three-dimensional
figure like...
- arecoline2•H2PtCl6, mp. 176 °C,
crystallizes from
water in orange-red
rhombohedrons. The
methiodide forms glancing prisms, mp. 173-174 °C.
Arecoline is...
-
Echinosphaerites aurantium (Middle Ordovician,
northeastern Estonia)
Rhombohedrons of
calcite that
appear almost as
books of petals,
piled up 3-dimensionally...
-
twins (in
various orientations) and
polysynthetic glide twinning on the
rhombohedron [1011
Cleavage Poor
Fracture Conchoidal,
splintery Mohs
scale hardness...
