PINK DOLOMITE Boonsboro (Washington County), Jake Slagle Collection, Jake Slagle photographer

BARYTE Pinesburg Quary (Washington County), Fred Parker Collection, Jake Slagle photographer

CALCITE Pinesburg Quary (Washington County), Jake Slagle Collection, Jake Slagle photographer

FLUORITE Pinesburg Quary (Washington County), Fred Parker Collection, Jake Slagle photographer

QUARTZ (similar to Herkimer Diamonds) Pinesburg Quary (Washington County), Fred Parker Collection, Jake Slagle photographer

NATIVE COPPER Unnamed Prospect, Washington Co., MD, Jake Slagle Collection, Jake Slagle, Photographer

NATIVE COPPER, CUPRITE, MALACHITE, EPIDOTE, Prospect near South Mountain (Washington County), Maryland, Jake Slagle Collection, Jake Slagle Photographer

MANGANITE Potomac Mine near Harpers Ferry, WV (Washington County), Natural History Society of Maryland Collection, Jake Slagle photographer

STRONTIANITE Near Sideling Hill (Washington County), Jake Slagle Collection, Jake Slagle photographer