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Piauí

Pedro II opal mines

Opal field Documented sitePermission required
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What you could find

Reported finds from this ground.

OpalOpal

Photos via Wikimedia Commons: Dpulitzer (CC BY-SA 4.0).

Why this spot

Only precious-opal district in Brazil

Brazilian precious opal in sandstone

Before you go

Hazards noted for this site.

Open pits

Keep exploring nearby

More spots in this area.

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Pedro II opal mines1 km away · Opal field
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