Explore › Tocantins rockhounding
Cristalandia / Porto Nacional amethyst-emerald
ROCKHOUNDING
GRAY AREA
DOCUMENTED
Where: Tocantins · South America · approx. -10.6, -49.18 (vicinity only)
Why this spot: Various
What turns up: Emerald occurrences, quartz
Access: Gray area.
Scattered artisanal workings
Open in Mudlark Map →
Satellite view, historic-map overlays, tide/flow context and field notes are in the app. Exact research detail is part of Pro.
Pins are approximate by design. This page is historical research, not permission to dig. Check ownership and local law first.