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Herbster: Granite & Agate Rockhounding in Bayfield County, Wisconsin

Public access5 mineralsBayfield County, WisconsinUpdated August 2026
Minerals reported
5
Elevation
600 ft
Best months
April to October

Herbster is a mapped rockhounding spot in Bayfield County, Wisconsin. Reported finds include granite, agate, banded iron formation, sandstone, prehnite. Below: coordinates, access notes, nearby spots, and trip-planning links.

Plan your visit

Generally open to casual rockhounding

Nearest road
Bark Point Road
Postcode
54844
Get directionsView on Google Maps

Coordinates are approximate. Confirm the exact ground in the RockHoundR app, where land overlays show which agency manages the area.

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.

Best time to visit Herbster

Comfortable months (45 to 90°F highs)

Best months: April to October. Typical highs run 77°F in midsummer and 22°F in midwinter, with winter lows near 6°F.

Climate normals: NOAA 1991-2020 monthlies, PORT WING station (7 mi away).

Geology at Herbster

This spot sits on ground mapped as water. Tough silica like agate and jasper typically survives weathering and collects as float in drainages and gravel.

Mapped unit
water
Elevation
600 ft

Geologic mapping via Macrostrat and the underlying state geological survey maps (CC BY 4.0). Bedrock at the surface can vary within a mapped unit.

Today's weather

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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.

Found at Herbster

Each name 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 Herbster.

Across the state line from Herbster

Herbster is close enough to the Wisconsin border that the next-closest rockhounding spots are in a neighboring state. Worth knowing if you are already on the road.

Herbster FAQ

Where is Herbster?+
Herbster is in Bayfield County, Wisconsin, at 46.83615, -91.25733. Nearest road: Bark Point Road.
What rocks and minerals can you find at Herbster?+
Herbster is reported to produce Granite, Agate, Banded Iron Formation, Sandstone, Prehnite.
Is collecting allowed at Herbster?+
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.
What tools should I bring to Herbster?+
Most agate and jasper is surface float: bring a spray bottle, a pick or small shovel, and a sturdy bag. Wet stones show their banding and translucence.
When is the best time to visit Herbster?+
The most comfortable months at Herbster are April to October.
How do I get to Herbster?+
Open the directions link to navigate to 46.83615, -91.25733 in Google Maps. The nearest road is Bark Point Road.

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