Naica

Naica, in Chihuahua, Mexico, is world-famous for its giant selenite (gypsum) crystals — some of the largest natural crystals ever discovered.
About Naicaextended article
What it is known for
The Naica lead-zinc-silver mine's hydrothermal caves, notably the Cave of Crystals, grew translucent selenite beams metres in length; the mine also yielded fine anhydrite and sulfides.
What collectors look for
Selenite from Naica — water-clear blades and groups — is the prize; museum-grade material is now scarce since the caves flooded after mining ceased.
Frequently asked questions
Where is Naica?
Naica is a mineral locality in Chihuahua, Mexico.
What minerals are found at Naica?
Minerals from Naica include Selenite, Gypsum, Anhydrite.
What is Naica known for?
Naica, in Chihuahua, Mexico, is world-famous for its giant selenite (gypsum) crystals — some of the largest natural crystals ever discovered.
References & databases
Mindat.org is the world’s largest open mineralogy database.