James St. John:
Strontianite (Stoneco Inc. Maumee Quarry, Lucas County, Ohio, USA) 1
James St. John:
Strontianite (Stoneco Inc. Maumee Quarry, Lucas County, Ohio, USA) 2
James St. John:
Strontianite (Stoneco Inc. Maumee Quarry, Lucas County, Ohio, USA) 3