-
tends to
nucleate at
certain centers and to
spread outwards,
producing spherulitic structures. Many
salts and
organic substances exhibit the same tendency...
-
moist ash
around a
central nucleus. This
texture can be
confused with
spherulitic and
axiolitic texture.
These lapilli are a
variety of
accretionary lapilli...
-
appearance of
pitch and are
often more or less
vesicular and
sometimes spherulitic. They are very
brittle and
break down
readily under a hammer.
Small crystals...
- into
several basic types: Testudoid, Geckoid, Crocodiloid, Dinosauroid-
spherulitic, Dinosauroid-prismatic, and Ornithoid.
Veterovata does not
always mirror...
- the
habit of NdCO3OH
crystals changes progressively to more
complex spherulitic or
dendritic morphologies. The
development of
these crystal morphologies...
-
Earrings of
polished "leopard-spot jasper" (actually a type of
spherulitic rhyolite)...
- Stipp, S. (2012)
Crystallization of CaCO3 in water-ethanol mixtures:
spherulitic growth,
polymorph stabilization and
morphology change.
Crystal Growth...
-
Identification Color Dark and
light blue,
turquoise Crystal habit Commonly spherulitic aggregates of
acicular crystals Cleavage perfect along [010] and [100]...
- and E) Atomic-resolution
image of
atoms in nacre. (F)
Transition from
spherulitic aragonite structures to nacre. (G and H)
Aggregated nanoparticles form...
-
crystals in the lava and
results in
textures such as flow foliations,
spherulitic, nodular, and
lithophysal structures. Some
rhyolite is
highly vesicular...
