“An old specimen from the late John C. White collection of Renton, Washington. Sphalerite with nacrite. The White label indicates that this was "Collected Before 1946: Lew Pringle" and that the specimen came from his father's collection. The sphalerite appears to be associated with tennantite-tetrahedrite and there is a small area of unidentified sharp, gemmy, greenish micro-crystals in a cavity. ”