Where: Hidalgo · North America · approx. 20.15, -98.67 (vicinity only)
Why this spot: Tertiary epithermal Ag veins
What turns up: Native silver, acanthite, pyrargyrite, calcite, quartz
Access: Gray area.
Historic and active silver district; mine museums exist. Specimens via miners.
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.