-
Volcanic gl**** is the
amorphous (uncrystallized)
product of
rapidly cooling magma. Like all
types of
gl****, it is a
state of
matter intermediate between...
-
Obsidian (/əbˈsɪdi.ən, ɒb-/ əb-SID-ee-ən ob-) is a
naturally occurring volcanic gl**** formed when lava
extruded from a
volcano cools rapidly with minimal...
-
Volcanic ash
consists of
fragments of rock,
mineral crystals, and
volcanic gl****,
produced during volcanic eruptions and
measuring less than 2 mm (0.079 inches)...
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rapid cooling (quenching) of the
molten form. Some gl****es such as
volcanic gl**** are
naturally occurring, and
obsidian has been used to make arrowheads...
- when
airborne particles of
molten material fuse into
tearlike drops of
volcanic gl****. Pele's
tears are jet
black in
color and are
often found on one end...
- (/ˈtækəlaɪt/ TAK-ə-lyte; also
spelled tachylyte) is a form of
basaltic volcanic gl****. This
gl**** is
formed naturally by the
rapid cooling of
molten basalt. It...
- pozzolana,
which can only be used for
pozzolans of
volcanic origin,
primarily composed of
volcanic gl****.
Pozzolanas such as
Santorin earth were used in...
- Tachylyte – Form of
basaltic volcanic gl****Pages
displaying short descriptions of
redirect targets –
Essentially a
basaltic gl**** Tephriphonolite – Type of...
- Pele's hair (closest
modern Hawaiian translation: "lauoho o Pele") is a
volcanic gl**** formation produced from
cooled lava
stretched into thin strands, usually...
-
Perlite is an
amorphous volcanic gl**** that has a
relatively high
water content,
typically formed by the
hydration of obsidian. It
occurs naturally and...
