Carbella: Agate & Jasper Rockhounding in Park County, Montana

Updated June 2026

Carbella is a mapped rockhounding spot in Park County, Montana. Reported finds include agate, jasper, petrified wood, quartz. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Park County
State: Montana
Nearest road: Rock Creek Road South
Coordinates: 45.21746, -110.92733

Geology at Carbella

This spot sits on Glacial moraine deposits, mapped as sand and gravel that formed within roughly the last 3 million years. Petrified wood typically travels as tough float, and worked gravels like these are exactly where weathered pieces tend to collect.

Mapped unit: Glacial moraine deposits
Age: 3 Ma to present (Pleistocene)
Rock types: sand and gravel
Elevation: 5,570 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.

Best time to visit Carbella

Best months: March to October. Typical highs run 86°F in midsummer and 34°F in midwinter, with winter lows near 16°F.

Climate normals: NOAA 1991-2020 monthlies, GARDINER station (17 mi away), adjusted for elevation.

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: April 1, 2026

BLM Montana — Recreational mineral collecting
Montana Bureau of Mines and Geology
Gem Mountain Sapphire Mine (fee-dig operator)
Community submissions reviewed against published agency rules

Found at Carbella

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 Carbella.

Across the state line from Carbella

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

Crystal ButteFremont County, Idaho · 74 mi awayAndesine

Carbella FAQ

Where is Carbella?+

Carbella is in Park County, Montana, at 45.21746, -110.92733. Nearest road: Rock Creek Road South.

What rocks and minerals can you find at Carbella?+

Carbella is reported to produce Agate, Jasper, Petrified Wood, Quartz.

Is collecting allowed at Carbella?+

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 Carbella?+

A rock hammer, sturdy gloves, and a padded bag cover petrified wood hunting. Most pieces are surface float, so walking slopes and washes beats digging.

When is the best time to visit Carbella?+

The most comfortable months at Carbella are March to October.

How do I get to Carbella?+

Open the directions link to navigate to 45.21746, -110.92733 in Google Maps. The nearest road is Rock Creek Road South.

More rockhounding in Montana

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Open Carbella on the map

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