Definition of Black oxide of manganese. Meaning of Black oxide of manganese. Synonyms of Black oxide of manganese
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Definition of Black oxide of manganese
Black oxide of manganeseManganese Man`ga*nese", n. [F. mangan[`e]se, It. manganese,
sasso magnesio; prob. corrupted from L. magnes, because of
its resemblance to the magnet. See Magnet, and cf.
An element obtained by reduction of its oxide, as a hard,
grayish white metal, fusible with difficulty, but easily
oxidized. Its ores occur abundantly in nature as the minerals
pyrolusite, manganite, etc. Symbol Mn. Atomic weight 54.8.
Note: An alloy of manganese with iron (called ferromanganese)
is used to increase the density and hardness of steel.
Black oxide of manganese, Manganese dioxide or peroxide,
or Black manganese (Chem.), a heavy black powder MnO2,
occurring native as the mineral pyrolusite, and valuable
as a strong oxidizer; -- called also familiarly
manganese. It colors glass violet, and is used as a
decolorizer to remove the green tint of impure glass.
Manganese bronze, an alloy made by adding from one to two
per cent of manganese to the copper and zinc used in
Meaning of Black oxide of manganese from wikipedia
- can incorporate
a variety of atoms
(as well as water
molecules) in the "tunnels" or "channels" between
the manganese oxide
is a chemical compound
with the formula
MnO2 in air at below
800 °C produces
α-Mn2O3 (higher temperatures produce
to wear. Manganese oxide
is used as an oxidising
agent, as a rubber
additive, in gl**** making, fertilisers, and ceramics. Manganese sulfate
is the chemical compound
in two oxidation states
+2 and +3 and the formula
- for hard black manganese oxides including hollandite
and romanechite. Psilomelane consists of hydrous manganese oxide
with variable amounts of barium
- a mineral consisting essentially of manganese dioxide
(MnO2) and is important
as an ore of manganese
. It is a black
, amorphous appearing
- natural brown
or reddish-brown earth pigment
and manganese oxide
than the other similar earth
- result of volcanic
activity. In Montana
the red color
is the result of
and the black color
is the result of manganese oxide
. The gemstone...
it from magnesia
negra, a black mineral containing
what is now known
" normally refers
to MgO, magnesium...
- (naturally formed
) Raw umber
(PBr7): a natural
clay pigment consisting of
, manganese oxide
and aluminum oxide
: Fe2O3 + MnO2 + nH2O...
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