James St. John: Corundum amphibolite (Chunky Gal Complex, Ordovician, ~458 Ma; Chunky Gal Mountain, Blue Ridge, North Carolina, USA) 1
James St. John: Corundum amphibolite (Chunky Gal Complex, Ordovician, ~458 Ma; Chunky Gal Mountain, Blue Ridge, North Carolina, USA) 2
James St. John: Corundum amphibolite (Chunky Gal Complex, Ordovician, ~458 Ma; Chunky Gal Mountain, Blue Ridge, North Carolina, USA) 3
James St. John: Amphibolite (Chunky Gal Complex, Ordovician, ~458 Ma; Chunky Gal Mountain, Blue Ridge, North Carolina, USA)