Large, lustrous 20 cm calcite crystal on brecciated limestone matrix with associated drusy sphalerite and traces of purple fluorite. The calcite is internally zoned in light shades of gray and has localized inclusions of sphalerite and hydrocarbon. Entered into Ross C. Lillie database as RCL2647. Notes from database as follow: 

Exceptionally large 20 cm scalenohedron from the ore body. Note: brecciated limestone matrix with light sphalerite druse and trace of dark purple fluorite as typical of periphery of ore body. Advance mining in November 1983 from the "Lillie Pod". Provenance: sold to Ross Lillie in district in 11/83; sold to Betty Kalaskie and retained in her collection as #327; sold back to Ross Lillie in 10/16.