Naica Mine (selenite / Cave of Crystals)

Where: Chihuahua · North America · approx. 27.85, -105.5 (vicinity only)

Why this spot: Tertiary hydrothermal / Cretaceous limestone

What turns up: Giant selenite (gypsum) crystals, plus galena, sphalerite, fluorite, anglesite from the ore body

Access: Prohibited / view only.

The famous crystal caves are flooded again and closed; the lead-zinc-silver mine is private and restricted. No public access.

Satellite view, historic-map overlays, tide/flow context and field notes are in the app. Exact research detail is part of Pro.