Awaruite
A nickel-rich iron alloy found in some oxidised carbonaceous chondrites.
Key facts
- Formula
- Ni3Fe
- Family
- Metals and alloys
- Crystal system
- Cubic
What it is
Awaruite is an alloy with about three nickel atoms for each iron atom. It is named after Awarua Bay in New Zealand, where it occurs in river gravels eroded from serpentine rocks.
Where it is found
In meteorites it occurs in CV chondrites such as Allende, and in CK chondrites, where most iron has been oxidised into silicates and oxides and what metal remains is very rich in nickel.
How it is recognised
It is silvery and magnetic, and identified by its nickel content with a microprobe.
Did you know?
Did you know?
On Earth awaruite forms when olivine-rich rocks react with water deep underground.
Did you know?
Nickel-rich metal in a meteorite is a sign that the rock was oxidised.