-
cannot exhibit pleochroism.
Tourmaline is
notable for
exhibiting strong pleochroism. Gems are
sometimes cut and set
either to
display pleochroism or to hide...
- the
United States are
required to be
disclosed at the
point of sale.
Pleochroism has a
physical property in
which the
gemstone will
appear to have multiple...
- Mg) to
grandidierite (Mg, Fe).
Grandidierites display strong trichroic pleochroism. That
means that it can show
three different colors depending on the...
- word
meaning "two-colored rock", a
reference to cordierite's
strong pleochroism. It has also been
called "water-sapphire" and "Vikings' Comp****" because...
-
Refractive index nα = 1.720 nβ = 1.798 nγ = 1.805
Birefringence 0.085
Pleochroism Strong 2V
angle Measured 35°,
calculated 32°
Dispersion r > v strong...
-
characteristic shade of yellowish-green or pistachio-green. It
displays strong pleochroism, the
pleochroic colors being usually green,
yellow and brown. Clinozoisite...
- noticeable. This property,
known as "
pleochroism" is of
great value in the
determination of
mineral composition.
Pleochroism is
often especially intense in...
- or radiohalo, is a microscopic,
spherical s**** of
discolouration (
pleochroism)
within minerals such as
biotite that
occurs in
granite and
other igneous...
-
microscope include colour,
colour variation under plane polarised light (
pleochroism,
produced by the
lower Nicol prism, or more
recently polarising films)...
- For
vauxite r > v, 2V is
greater for red
light than for
violet light.
Pleochroism is the
phenomenon of
crystals appearing to
change color as they are rotated...
