- the zeolites.
Amygdules usually form
after the rock has been emplaced, and are
often ****ociated with low-temperature alteration.
Amygdules may
often be...
- calcite, quartz, or chalcedony.
Individual cavity fillings are
termed amygdules (American usage) or
amygdales (British usage).
Sometimes these can be...
-
within lots of
amygdules,
chlorite and
albite will also form
together with
albite forming on the rim and
chlorite in the center.
Amygdules are
usually found...
- to the
current spelling.
Chabazite occurs most
commonly in
voids and
amygdules in
basaltic rocks.
Chabazite is
found in India, Iceland, the
Faroe Islands...
-
hydrothermal deposits, as
mineral sublimates deposited near fumaroles, in
amygdules in basalt, and in
nitrate deposits in arid climates. It
occurs ****ociated...
-
metamorphism of
basic igneous rocks, but is not foliated.
amygdaloidal Amygdules or
amygdales form when the gas
bubbles or
vesicles in
volcanic lava (or...
-
featuring two
distinct layers. The
upper layer consists of
vesicular and
amygdule zeolitic basalt,
while the
lower layer consists of m****ive basalt. The...
-
cluster of deep robin's-egg blue
chrysocolla with a
covering of
drusy quartz Amygdule Rock
microstructure Vesicular texture "vug". The Free Dictionary. Farlex...
-
vesicles and
fractures within the
volcanic rocks.
Prehnite and
agate amygdules are also
plentiful island gemstones.: 55, 58–61
Recreational activity...
-
chloritized mafic lava flows,
pillow basalts,
gabbroic sills and ****s;
amygdules of quartz, chlorite, and
calcite are common.
shallow marine 150 m (490 ft)...
