Smolnik pyrite mine

What you could find

Reported finds from this ground.

Crystals and minerals

Nails and fittings

Also reported: melanterite crusts.

Photos via Wikimedia Commons: Stephanie Clifford from Arlington, VA, USA (CC BY 2.0), North Lincolnshire Museum, Martin Foreman, (CC BY 2.0).

Why this spot

Copper-pyrite deposit mined from the 1200s, now a textbook acid mine drainage site

Before you go

Hazards noted for this site.