It's a little hard to judge just what is underneath all of those beautiful golden Chalcopyrites, but from the spikey appearance, I think it is probably crystals of Quartz or Calcite... there is no damage to see through; looks good from all sides! It has an unusually dark-golden color with just a hint of reddish iridescence. From the Sweetwater Mine, Ellington, Viburnum Trend District, Reynolds County.