- In
geology and mineralogy,
druse is a
crystal habit represented by the
coating of fine
crystals on a rock
fracture surface, or vein or
within a vug or...
-
especially near
Mursinka in the
Ekaterinburg district,
where it
occurs in
drusy cavities in
granitic rocks.
Amethyst was
historically mined in many localities...
-
matrix Apple-green
cuprian smithsonite crystals. A
second generation of
drusy smithsonite was
deposited in the crev****es
between the
larger growth. Crystals...
-
black Crystal habit 6-sided
prism ending in 6-sided
pyramid (typical),
drusy, fine-grained to microcrystalline, m****ive
Twinning Common Dauphine law...
-
typically light grey to blue and
often contain hollow cavities lined with
drusy quartz.: 92
Fairburn agates are rare
fortification agates named for Fairburn...
-
opaque Crystal habit 6-sided
prism ending in 6-sided
pyramid (typical),
drusy, fine-grained to microcrystalline, m****ive
Twinning Common Dauphine law...
-
there is a
cluster of deep robin's-egg blue
chrysocolla with a
covering of
drusy quartz Amygdule Rock
microstructure Vesicular texture "vug". The Free Dictionary...
- of
pyrargyrite are
usually terminated by a low
hexagonal pyramid or by a
drusy basal plane. The
color of
pyrargyrite is
usually greyish-black and the lustre...
-
natural blue to blue-green materials, such as this
botryoidal chrysocolla with
drusy quartz, are
occasionally confused with or used to
imitate turquoise....
- prismatic.
Azurite specimens can be m****ive to
nodular or can
occur as
drusy crystals lining a cavity.
Azurite has a Mohs
hardness of 3.5 to 4. The specific...
