Where: New Hampshire · North America · approx. 43.75, -71.93 (vicinity only)
Why this spot: Granitic pegmatite
What turns up: Rare phosphate minerals (triphylite, whitlockite, ludlamite), beryl and mica
Access: Permission required.
Private North Groton pegmatite famous with mineral collectors; permission or club trip needed.
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.