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Definition of silica
Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of silica is as below...
Silica
(n.)
Silicon
dioxide,
SiO/. It
constitutes
ordinary
quartz
(also opal and
tridymite),
and is
artifically
prepared
as a very fine,
white,
tasteless,
inodorous
powder..
Lern More About Silica
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Enstatite
::
Enstatite
(n.) A
mineral
of the
pyroxene
group,
orthorhombic
in
crystallization;
often
fibrous
and
massive;
color
grayish
white or
greenish.
It is a
silicate
of
magnesia
with some iron.
Bronzite
is a
ferriferous
variety..
Gymnite
::
Gymnite
(n.) A
hydrous
silicate
of
magnesia.
Silicicalcareous
::
Silicicalcareous
(a.)
Consisting
of
silica
and
calcareous
matter.
Keilhau-ite
::
Keilhau-ite
(n.) A
mineral
of a
brownish
black
color,
related
to
titanite
in form. It
consists
chiefly
of
silica,
titanium
dioxide,
lime, and
yttria..
Flint Glass
::
Flint glass () A soft,
heavy,
brilliant
glass,
consisting
essentially
of a
silicate
of lead and
potassium.
It is used for
tableware,
and for
optical
instruments,
as
prisms,
its
density
giving
a high
degree
of
dispersive
power;
-- so
called,
because
formerly
the
silica
was
obtained
from
pulverized
flints.
Called
also
crystal
glass.
Cf.
Glass..
Zunyite
::
Zunyite
(n.) A
fluosilicate
of
alumina
occurring
in
tetrahedral
crystals
at the Zu/i mine in
Colorado.
Silicic
::
Silicic
(a.)
Pertaining
to,
derived
from, or
resembling,
silica;
specifically,
designating
compounds
of
silicon;
as,
silicic
acid..
Petalite
::
Petalite
(n.) A rare
mineral,
occurring
crystallized
and in
cleavable
masses,
usually
white,
or
nearly
so, in
color.
It is a
silicate
of
aluminia
and
lithia..
Topaz
::
Topaz (n.) A
mineral
occurring
in
rhombic
prisms,
generally
yellowish
and
pellucid,
also
colorless,
and of
greenesh,
bluish,
or
brownish
shades.
It
sometimes
occurs
massive
and
opaque.
It is a
fluosilicate
of
alumina,
and is used as a gem..
Silicate
::
Silicate
(n.) A salt of
silicic
acid.
Iolite
::
Iolite
(n.) A
silicate
of
alumina,
iron, and
magnesia,
having
a
bright
blue color and
vitreous
luster;
cordierite.
It is
remarkable
for its
dichroism,
and is also
called
dichroite..
Hisingerite
::
Hisingerite
(n.) A soft
black,
iron ore,
nearly
earthy,
a
hydrous
silicate
of
iron..
Allanite
::
Allanite
(n.) A
silicate
containing
a large
amount
of
cerium.
It is
usually
black in
color,
opaque,
and is
related
to
epidote
in form and
composition..
Wadd
::
Wadd (n.) An
earthy
oxide of
manganese,
or
mixture
of
different
oxides
and
water,
with some oxide of iron, and often
silica,
alumina,
lime, or
baryta;
black
ocher.
There are
several
varieties..
Fayalite
::
Fayalite
(n.) A
black,
greenish,
or
brownish
mineral
of the
chrysolite
group.
It is a
silicate
of
iron..
Cyanite
::
Cyanite
(n.) A
mineral
occuring
in
thin-bladed
crystals
and
crystalline
aggregates,
of a
sky-blue
color.
It is a
silicate
of
aluminium..
Pyrophyllite
::
Pyrophyllite
(n.) A
mineral,
usually
of a white or
greenish
color and
pearly
luster,
consisting
chiefly
of the
hydrous
silicate
of
alumina..
Glucinum
::
Glucinum
(n.) A rare
metallic
element,
of a
silver
white
color,
and low
specific
gravity
(2.1),
resembling
magnesium.
It never
occurs
naturally
in the free
state,
but is
always
combined,
usually
with
silica
or
alumina,
or both; as in the
minerals
phenacite,
chrysoberyl,
beryl or
emerald,
euclase,
and
danalite.
It was named from its oxide
glucina,
which was known long
before
the
element
was
isolated.
Symbol
Gl.
Atomic
weight
9.1.
Called
also
beryllium..
Epistilbite
::
Epistilbite
(n.) A
crystallized,
transparent
mineral
of the
Zeolite
family.
It is a
hydrous
silicate
of
alumina
and
lime..
Albolith
::
Albolith
(n.) A kind of
plastic
cement,
or
artificial
stone,
consisting
chiefly
of
magnesia
and
silica;
--
called
also
albolite..
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