- In crystallography, the
hexagonal crystal family is one of the 6
crystal families,
which includes two
crystal systems (
hexagonal and trigonal) and two lattice...
- In geometry, a
hexagon (from Gr**** ἕξ, hex,
meaning "six", and γωνία, gonía,
meaning "corner, angle") is a six-sided polygon. The
total of the internal...
-
Kathleen Lonsdale), also
called hexagonal diamond in
reference to the
crystal structure, is an
allotrope of
carbon with a
hexagonal lattice, as
opposed to the...
- are
combined into a
crystal family. The
seven crystal systems are triclinic, monoclinic, orthorhombic, tetragonal, trigonal,
hexagonal, and cubic. Informally...
- Ice
crystals are
solid ice in
symmetrical shapes including hexagonal columns,
hexagonal plates, and
dendritic crystals. Ice
crystals are
responsible for...
- aquamarine.
Naturally occurring hexagonal crystals of
beryl can be up to
several meters in size, but
terminated crystals are
relatively rare. Pure beryl...
- It
forms as
sunlight or
moonlight is
refracted by
millions of
hexagonal ice
crystals suspended in the atmosphere. Its radius, as
viewed from Earth, is...
- cut, and clarity. It is
transparent to
translucent and
possesses a
hexagonal crystal system.
Aquamarine mainly forms in
granite pegmatites and hydrothermal...
-
system at room temperature, and to the
hexagonal crystal system above 573 °C (846 K; 1,063 °F). The
ideal crystal shape is a six-sided
prism terminating...
- can be seen as a
hexagon tiling on a
cylindrical surface Hexagonal Persian tile c.1955 The
hexagonal tiling appears in many
crystals. In
three dimensions...
