- 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...
-
mineraloid, a form of opal,
found in
cavities in
volcanic tuff. It is a globular, botryoidal, or
stalactic concretionary form of opal. The
mineraloid...
- stone) is any
naturally occurring solid m**** or
aggregate of
minerals or
mineraloid matter. It is
categorized by the
minerals included, its
chemical composition...
- 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...
-
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...
- 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...
-
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...
- When
composed of silica,
fulgurites are
classified as a
variety of the
mineraloid lechatelierite. When
ordinary negative polarity cloud-ground lightning...
- (/ˌkrɪsəˈkɒlə/ KRIS-ə-KOL-ə) is a
hydrous copper phyllosilicate mineral and
mineraloid with the
formula Cu 2 – xAl x(H 2Si 2O 5)(OH) 4⋅nH 2O (x < 1) or (Cu,...
