RockHoundR
Download on the App StoreGet it on Google Play
Best spot

Tunk Mountain — Rockhounding in Hancock County, Maine

Tunk Mountain is carved from the Tunk Lake pluton, a concentrically zoned alkali granite that grades into rapakivi granite, producing smoky quartz, perthitic feldspar, and dark hornblende-bearing rock. The peak sits on Donnell Pond Public Reserved Land, where the Maine Geological Survey allows casual hobby collecting without a permit. It is a granite-and-quartz site rather than a gem pegmatite. Reported finds include smoky quartz, feldspar, hornblende, biotite. Below: coordinates, access notes, nearby spots, and trip-planning links.

Tunk Mountain photos

Public image records connected to this spot or its reported material.

1 photo

Map showing Tunk Mountain in Hancock County, Maine

Quick details

Access
Public area
State
Maine

Land & collecting status

Generally open to casual rockhounding

Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig.

Public-land rules vary by agency, season, and field office. The RockHoundR app pulls live BLM, USFS, NPS, and tribal overlays so you can see exactly which agency manages the ground at this spot.

Sources & verification

Spot details combine the public RockHoundR location dataset, normalized mineral labels, agency land-status checks in the app, and community submissions. Coordinates are approximate until verified in the field.

State guidance last verified:

Found at Tunk Mountain

Each chip opens all spots that produce that material; the encyclopedia link opens the full ID and field guide.

Nearby rockhounding spots

Other rockhounding spots within driving distance of Tunk Mountain.

Tunk Mountain FAQ

Why is Tunk Mountain one of the best rockhounding spots in Maine?+
Tunk Mountain is carved from the Tunk Lake pluton, a concentrically zoned alkali granite that grades into rapakivi granite, producing smoky quartz, perthitic feldspar, and dark hornblende-bearing rock. The peak sits on Donnell Pond Public Reserved Land, where the Maine Geological Survey allows casual hobby collecting without a permit. It is a granite-and-quartz site rather than a gem pegmatite.
Where is Tunk Mountain?+
Tunk Mountain is in Hancock County, Maine, at 44.62514, -68.08891.
What rocks and minerals can you find at Tunk Mountain?+
Tunk Mountain is reported to produce Smoky Quartz, Feldspar, Hornblende, Biotite.
Is collecting allowed at Tunk Mountain?+
Generally open to casual rockhounding. Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig. Always confirm current rules with the managing agency before a trip.
How do I get to Tunk Mountain?+
Open the directions link to navigate to 44.62514, -68.08891 in Google Maps. Some spots are remote — check road conditions before driving out.

More rockhounding in Maine

See all 31 Maine spots →

Open Tunk Mountain on the map

Use the RockHoundR app for live land overlays, weather, geology, directions, and saved finds.

Download on the App StoreGet it on Google Play