Locality: Quincy mine, Hancock, Houghton County, Michigan USA
Dimensions: 6.5 x 5 x 2.4 cm.
Datolite nodules showing intense mustard-yellow to burnt-orange color with red highlights are considered the rarest and most highly-prized Michigan Copper Country datolites, and this fine 6.5 cm. example is from the noted collection of mine captain T.F. Cole (1862-1939), whose collection went to the California Institute of Technology. Outstanding color and vivid red outlines around a rich orange interior make this an exceptional datolite. One small surface fracture could easily be removed with a re-polish. These Quincy mine datolites were found in the 1900s are rarely seen for sale today. Classic! Mark Cross photo.