Anahi Mine (ametrine)

Where: Santa Cruz · South America · approx. -18.05, -58.3 (vicinity only)

Why this spot: Hydrothermal in limestone

What turns up: Ametrine (natural amethyst-citrine bicolor quartz), the world's main commercial source.

Access: Prohibited / view only.

Single privately controlled mine in the Pantanal near Brazil. No public access; material sold by the operation.

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