The important minerals of nickel are garnierite, pentlandite, limonite.

Some ores of Nickel are: Pentlandite,Niccolite,Millerite and Garnierite.

There is no statistical number for how much nickel is in the earth. However, scientists believe that nickel is the 2nd most abundant element in the earth's core.

Nickel is commonly found in the Earth's crust, usually in combination with sulfur and other metals. It is often mined in countries like Russia, Canada, Australia, and Indonesia. Additionally, it can be found in various types of ores such as pentlandite and garnierite.

• Pretty much the same as anywhere else in the world. There are a several major deposits of most any metal and mineral in different European countries.
• http://en.wikipedia.org/wiki/Mining#Europe