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Explore › Rio Grande do Sul rockhounding

Frederico Westphalen amethyst mines

ROCKHOUNDING PROHIBITED / VIEW ONLY DOCUMENTED

Where: Rio Grande do Sul · South America · approx. -27.36, -53.39 (vicinity only)

Why this spot: Cretaceous basalt vugs

What turns up: Amethyst geodes, calcite, gypsum inclusions

Access: Prohibited / view only.

Underground amethyst mines; specimens purchased

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.