A large cabinet sized specimen composed of parallel orientated stalactic growths of Goethite. The color ranges from reddish brown to dark brown to black. The radiating growth structure of the Goethite crystals can be seen on the many broken surfaces. The Montreal mine closed in1963 and was considered to be the world's deepest iron mine at 4337 feet (1321 meters).
The specimen is in fairly good condition but none of the stalactic ends are complete.