On a matrix of crystallized, splendent pyrite, are nestled botryoids of translucent light green prehnite. The prehnite balls get as large as 1.5 cm. There are also lustrous, white crystals of what might be natrolite scattered on the prehnite. Unusual for the locality and for that matter, unusual in that it is associated with pyrite - I cannot think of another prehnite/pyrite association offhand 7.2 x 4.2 x 3.2 cm