São Tomé das Letras quartzite quarries

Where: Minas Gerais · South America · approx. -21.72, -44.98 (vicinity only)

Why this spot: Plateau town built of flagstone quartzite, with quartz crystal pockets found in active quarries

What turns up: quartz crystals, quartzite slabs

Access: Permission required.

Quarries are private workplaces, enter only with operator consent.

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