Bühler Eisen ( 32,500 g )

Bühler Eisen, gediegen
 
Fundort:  Bühl bei Kassel.
A classic source of native iron in Germany.
The ore iron was found primarily in the deeper levels of the quarry and formed in association with the coal seams found there.
After a major blasting operation on the lower levels in October 1925, clay intrusion occurred, quickly filling the quarry.
This is how today's bathing lake was formed.
The ore iron was found in "accumulations" in the basalt in "lumps" weighing up to 13.7 kg.
 
It was found together with the iron carbide cohenite.
Cohenite is a component of iron meteorites and enstatite chondrites.
On Earth, it is found only in igneous rocks that were secondarily reduced by intrusion into coal seams, such as at Bühl near Kassel in Germany and Qeqertarsuaq in Greenland.
Associated minerals include native iron, schreibersite, troilite, and wüstite.