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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:
Sulphides
carrollite
cobaltite
cobaltpentlandite
costibite
glaucodot
linnaeite
paracostibite
willyamite
Tellurides
mattagamite
Arsenides
clinosafflorite
safflorite
skutterudite
Oxides
guite
Carbonates
spherocobaltite
Selenites
cobaltomenite
Sulphates
aplowite
moorhouseite
Arsenate
cobaltarthurite
cobaltaustinite
cobaltkoritnigite
cobaltlotharmeyerite
cobalttsumcorite
erythrite
roselite
roselite-β
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