Awaruite

Formula:  Ni2Fe to Ni3Fe

Origin of name:  After locality, Awarua Bay, South Island, New Zealand

 

Crystal system:  Cubic

Crystal class:  4/m -3 2/m

Twinning:

Unit cell: a = 3.560 Å

 

Colour:  Silver-white to grayish white

Diaphaneity: Opaque

Luster:  Metallic

Habit:  Anhedral to subhedral small plates and grains. In meteorites as rims or regular intergrowth with kamacite

Hardness:  5

Specific gravity:  8

Cleavage:  None

Tenacity:

Streak: Light gray

 

Synonyms/varieties: Bobrovskite, josephinite, souesite

 

Comments:  Name is probably due to a mislabeling of a sample which came from another location in New Zealand. Found in river placers, from serpentinised peridotites; in meteorites

 

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