Images
Symbol Co, element, transition metal.
Cobalt has been found in its native state in alloys of natural meteoric
iron in a few places on Earth, and in Moon rocks,
but it is not proposed as a new mineral species (Mindat).
Specific gravity: 8.9
Colour: Bluish white
Melting point: 1495o
Boiling point: 2930o
Abundance: 25 parts per million by weight, 8 parts per million by moles in the Earth's crust, 4 parts per million by weight, 0.7 parts per
million by molesin the Solar System
(ChC).
Oxidation states -1, 0, 5, 3 (ChC)
The main ores of cobalt are cobaltite, erythrite,
glaucodot and skutterudite. Cobalt is
generally produced as a by-product of nickel and copper
mining
(ChC).
Cobalt-bearing minerals include:
Alloys
wairauite
Sulphides
carrollite
cobaltite
cobaltpentlandite
costibite
glaucodot
linnaeite
paracostibite
willyamite
Selenides
penroseite
tyrrellite
Tellurides
mattagamite
Arsenides
clinosafflorite
oenite
safflorite
skutterudite
Oxides and Hydroxides
guite
jamborite
Carbonates
kaznakhtite
spherocobaltite
Selenites
cobaltomenite
Sulphates
aplowite
moorhouseite
wupatkiite
Arsenates
cobaltarthurite
cobaltaustinite
cobaltkoritnigite
cobaltlotharmeyerite
cobalttsumcorite
erythrite
hloušekite
pradetite
roselite
anorthoroselite
Nesosilicates
oursinite
Back to Minerals