In hexahedrites, fine parallel lines called Neumann lines are often seen, which are evidence for structural deformation of adjacent kamacite plates due to shock from impacts.
22.
About 5 % of meteorites that have been seen to fall are iron meteorites composed of iron-nickel alloys, such as kamacite and / or taenite.
23.
Cliftonite was first considered to be a new form of carbon, then a pseudomorph of graphite after diamond, and finally reassigned to a pseudomorph of graphite after kamacite.
24.
The increase in nickel content causes taenite to have a face-centered unit cell, whereas kamacite's higher iron content causes its unit cell to be body centered.
25.
The lines are indicative of a shock-induced deformation of the kamacite crystal, and are thought to be due to impact events on the parent body of the meteorite.
26.
It occurs in meteorites along the grain boundaries of kamacite or troilite in the form of tiny plates . it occurs associated with kamacite, taenite, daubreelite, troilite and sphalerite.
27.
It occurs in meteorites along the grain boundaries of kamacite or troilite in the form of tiny plates . it occurs associated with kamacite, taenite, daubreelite, troilite and sphalerite.
28.
"' Iron meteorites "'are meteorites that consist overwhelmingly of an iron nickel alloy known as meteoric iron that usually consists of two mineral phases : kamacite and taenite.
29.
In the picture shown, the broad white bars are " kamacite " ( dimensions in the mm-range ), and the thin line-like ribbons are " taenite ".
30.
The annealing is carried out in two stages : first a mixture of cohenite and kamacite is formed in air at ca . 950 �C; it is then partly converted to cliftonite in vacuum at ca . 550 �C.
