Piedmont Fossil:
Sandstone
Piedmont Fossil:
Bituminous Coal
Piedmont Fossil:
Anthracite Coal
Piedmont Fossil:
Fault-Zone Breccia
Piedmont Fossil:
Brachiopods - Kentucky State Fossil
Piedmont Fossil:
Appekunny Argillite
Piedmont Fossil:
Pahoehoe Lava Basalt
Piedmont Fossil:
Obsidian
Piedmont Fossil:
Banded Obsidian
Piedmont Fossil:
Obsidian
Piedmont Fossil:
Triassic Diabase
Piedmont Fossil:
Diabase (also known as Dolerite)
Piedmont Fossil:
Miarolitic Granite
Piedmont Fossil:
Granite Pegmatite
Piedmont Fossil:
Pink Granite
Piedmont Fossil:
Baltimore Gneiss
Piedmont Fossil:
Wakefield Marble
Piedmont Fossil:
Amygdaloidal Metabasalt
Piedmont Fossil:
Chlorite, Epidote & Quartz
Piedmont Fossil:
Catoctin Greenstone
Piedmont Fossil:
Banded Jasper
Piedmont Fossil:
Banded Jasper and Hematite
Piedmont Fossil:
Malachite with Quartz
Piedmont Fossil:
Monzonite Porphyry
Piedmont Fossil:
Monzonite Porphyry
Piedmont Fossil:
Rose Quartz
Piedmont Fossil:
Smoky Quartz and Feldspar Crystals
Piedmont Fossil:
Smoky Quartz and Feldspar Crystals
Piedmont Fossil:
Red Granite
Piedmont Fossil:
Schorl Tourmaline Crystal Cap
