browse words by letter
a
b
c
d
e
f
g
h
i
j
k
l
m
n
o
p
q
r
s
t
u
v
w
x
y
z
more about columbite
columbite |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Columbite \Co*lum"bite\, n. [Cf. F. colombite. See {Columbium}.] (Min.) A mineral of a black color, submetallic luster, and high specific specific gravity. It is a niobate (or columbate) of iron and manganese, containing tantalate of iron; -- first found in New England. From WordNet r 1.6 [wn]: columbite n : a black mineral that is an ore of niobium and tantalum [syn: {niobite}]
more about columbite
This work is licensed under a
