Lapidary level preparation of an astonishing small-cabinet matrix specimen from a legendary find! Wulfenite crystals lightly pseudomorphed by Chalcedony presented as a small cabinet amphitheatre, Lapidary level polish to the matrix reveals the perfectly bisected, paper thin, crystals. Stand upright or sits flat, unaided. Finch/Barking Spider Mine. Finch Mine, Keystone Gulch, Chilito, Hayden area, Banner Mining District, Gila County, Arizona, USA. 1.75" x 1.35" x .5", .7 oz.