Wolf, Ron2025-05-202025-05-20https://hdl.handle.net/11124/180631Photographed by Ron Wolf.Flecks and wires of native gold in fine-grained matrix, Donald R. Tunnel, Gold Hill, Boulder County, Colorado.born digitaldigital photographsCopyright Ron Wolf.In copyright - non-commercial use permitted: http://rightsstatements.org/vocab/InC-NC/1.0/mineral and rock specimensMinerals -- Colorado -- Boulder CountyMinerals -- Colorado -- Gold Hill (Boulder County)Gold -- Colorado -- Boulder CountyGold -- Colorado -- Gold Hill (Boulder County)Image