- A
mineraloid is a
naturally occurring substance that
resembles a mineral, but does not
demonstrate the
crystallinity of a mineral.
Mineraloid substances...
- to the
amorphous (chemical)
physical structure, it is
classified as a
mineraloid,
unlike crystalline forms of silica,
which are
considered minerals. It...
- gemstone.
Unlike many gemstones, jet is not a mineral, but is
rather a
mineraloid. It is
derived from wood that has
changed under extreme pressure. The...
- and
crystalline structure, it is not
considered a
mineral but only a
mineraloid. The name was
coined from Gr****
elements Όζω ozο, to stink, and κηρός...
-
amorphous SiO2, non-crystalline
mineraloid. It is
named for
Henry Louis Le Chatelier.
Lechatelierite is a
mineraloid as it does not have a
crystal structure...
- stone) is any
naturally occurring solid m**** or
aggregate of
minerals or
mineraloid matter. It is
categorized by the
minerals included, its
chemical composition...
-
mineraloid, a form of opal,
found in
cavities in
volcanic tuff. It is a globular, botryoidal, or
stalactic concretionary form of opal. The
mineraloid...
- cleavage, it has a
conchoidal fracture. The
transparent or
translucent mineraloid has a
globular structure, a
vitreous luster, and a
white streak. Hyalite...
-
Menilite is a greyish-brown form of the
mineraloid opal. It is also
known as
liver opal or
leberopal (German), due to its color. It is
called menilite...
-
Opalescence or play of
color is an
optical phenomenon ****ociated with the
mineraloid gemstone opal, a
hydrated silicon dioxide. This
effect appears as a milky...
