[A helpneeder]

Hi i would like to have some help. My mission is to write how to get nickle from as many different minerals as possible. I found the names of the nickel minerals from wikipedia, but when i tried to search for getting nickel from them, i didnt have success.
I would need atleast equations for getting nickel from following minerals.
Ni[C32H36N4]
Ni9(AsO4)2AsO6
Ni3(AsO4)2·8H2O
NiSb
(Pt,Pd,Ni)S
(Ni,Fe,Mg)CO3
NiAsS
Ni3S2
NiCO3·6H2O
NaNi4(CO3)3(OH)3·3H2O
Ni11As8
NiTe2
NiS
NiAs
Ni2FeAs
Ni2CO3(OH)2
(Fe,Ni)9S8
Ni2+Ni23+S4
NiAs2
(Co,Fe,Ni)As2
NiSbS
Fe2+Ni23+S4
Ni3CO3(OH)4·4H2O

Sorry if you dont understand the indexes and big numbers, this forum just doesnt let me make indexes (or i cant make them). I would be most delighted if you would help me with atleast some of them. Thanks again.

[Albert]

The procedure to get nickel from minerals is one of the most complicated ones.

Starting from limonite, garnierite or pentlandite, you'll end up having Ni₂S₃, which is isolated by flotation and, finally, converted into nickel oxide.

Then, you can use this procedure: http://en.wikipedia.org/wiki/Mond_process

[A helpneeder]

Thanks, but maybe you can tell me, what happens in the middle, before having Ni₂S₃ and how is it converted into nickel oxide. Equations of those procedors would help a lot. Again thanks .

[Borek]

Ni₂S₃ and how is it converted into nickel oxide

Simple roasting in the presence of atmospheric oxygen.

[Alberto_Kravina]

Or, if you have a nickel Telluride/Arsenide/Selenide you can isolate the nickel by reducing the anion to its gaseous hydride with nascent hydrogen.
Carbonate minerals can be roasted (like the sulfides mentioned before) to the oxide, and then reduced to water and the metal with hydrogen  (MeCO₃ ? MeO + CO₂ / MeO + H₂ ? Me + H₂O (Me = metal))