-
Crystal twinning occurs when two or more
adjacent crystals of the same
mineral are
oriented so that they
share some of the same
crystal lattice points...
-
engine Straight-
twin engine, also
referred to as a parallel-
twin Crystal twin, a
crystal sample with two
domains containing a
twin boundary Twin house, semi-detached...
-
twin-
crystal or
double crystal (such as chiastolite). It is
crystallographic twin according to the
spinel twin law and is seen in
octahedral crystals...
- its
crystals are the
cyclic twins called trillings.
These twinned crystals have a
hexagonal appearance, but are the
result of a
triplet of
twins with...
- Thus,
snowflakes form euhedral, six-sided
twinned crystals. In rocks, the
presence of
euhedral crystals may
signify that they
formed early in the crystallization...
- A
crystal or
crystalline solid is a
solid material whose constituents (such as atoms, molecules, or ions) are
arranged in a
highly ordered microscopic...
-
gives the
crystal perfect cleavage along the
sheets (in the {010} plane).
Gypsum occurs in
nature as
flattened and
often twinned crystals, and transparent...
-
triplet as
tridymite commonly occurs as
twinned crystal trillings (compound
crystals comprising three twinned crystal components).
Tridymite can
occur in...
- gray, yellow, green, or red
monoclinic crystals.
These crystals are
typically sphenoid in
habit and are
often twinned.
Possessing a
subadamantine tending...
-
based on "Brazil law
twinning" (a form of
quartz twinning where right- and left-hand
quartz structures are
combined in a
single crystal) can be used to identify...
