Dims: 2-1/8" x 2-1/8" x 1-1/4"
Wt: 4.49 oz
Mina El Potosi, Santa Eulalia, Chihuahua, Mexico
The bulk of this specimen is made up of several crystals of Pyrrhotite, the iron sulfide known for its slight magnetism. The crystals have the classic brown-gold color, submetallic luster, and platy, hexagonal shape with basal terminations that Pyrrhotite so often has. The largest crystal on the piece, measuring about 1 inch by 1 inch, is half missing. It either grew that way or it did some substantial healing after the break, because its luster at the "missing edge" is similar to that of the complete prism faces. The other crystals erupt only partially out of the matrix, so their hexagonal form is not easy to see, but what is visible is complete, with little damage. The matrix from which they rise is made up of small crystals of Pyrrhotite mixed with even smaller crystals of sphalerite and arsenopyrite, along with a few tiny dogtooth calcite crystals.