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Manganese is a
chemical element; it has
symbol Mn and
atomic number 25. It is a hard, brittle,
silvery metal,
often found in
minerals in
combination with...
- is a
group name for hard
black manganese oxides including hollandite and romanechite.
Psilomelane consists of
hydrous manganese oxide with
variable amounts...
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mineral consisting essentially of
manganese dioxide (MnO2) and is
important as an ore of
manganese. It is a
black,
amorphous appearing mineral, often...
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Manganese dioxide is the
inorganic compound with the
formula MnO 2. This
blackish or
brown solid occurs naturally as the
mineral pyrolusite,
which is...
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Manganese violet is the
inorganic compound with the
formula NH4MnP2O7. As
implied by its name and composition, it is a purple,
inorganic pigment. Because...
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often missing their skin layer, the
white ash layer) was
painted with
black manganese giving their color. The red
mummy technique (2500 BCE to 2000 BCE)...
- nodules, also
called manganese nodules, are
mineral concretions on the sea
bottom formed of
concentric layers of iron and
manganese hydroxides around a...
-
Manganese Bronze Holdings plc (MBH) was the
holding company of LTI Limited. The firm's sole
business in its
final years as a
company was
London black...
- were red (iron oxide, hematite, or red ochre) and
black (
manganese dioxide, pyrolusite),
though black from
juniper or pine
carbons has also been discovered...
- nomenclature, is a
group of
elements in the
periodic table. It
contains manganese (Mn),
technetium (Tc),
rhenium (Re) and
bohrium (Bh). This
group lies...
