Pyrite Cube in Matrix From Africa "The River Runs North: A

"The River Runs North: A Story of Montana Moss Agate" by Tom Harmon

unless otherwise noted

Lace Agate

surrounded by howlite and black onyx

This specimen features purple chalcedony in orb formations

Pyrite Cube in Matrix From Africa "The River Runs North: APyrite cubes in marl matrix from Navajn, Spain. These are natural pyrite minerals and are famous all around the world for their incredible formation. Originally discovered in 1965, the mine has been continually worked to this day. The chemical formula for pyrite is FeS2. The cube itself measures between 1. 5 cm and 2. 5 cm, and the whole cube in matrix is approximately 5 6 oz. The photo is representative of the material and does not necessarily mean