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Niobite
Niobite
, also called
columbate
and
columbite
(
Fe
,
Mn
)(
Nb
,
Ta
)
2
)
O
6
]) is a black
mineral
that is an ore of
niobium
and
tantalum
. It has a submetallic
luster
and a high
specific gravity
and is a niobate of
iron
and
manganese
, containing tantalate of iron. This mineral was first found in
New England
.
See also:
List of minerals
Wikipedia
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