Nests of scintillating, soft-to-the-touch, hair-like, jamesonite needles to about 1.5 cm richly cover the front of the mounded matrix of sulfides on this classic specimen from Zacatecas, Mexico. A lustrous, 6 mm, pyrite crystal on top of the matrix is a nice touch. Ex. Mullane Collection. This piece dates to the 1960s or 1970s.