Farmington: Agate & Prehnite Rockhounding in Capitol Planning Region, Connecticut

Updated June 2026

Farmington is a mapped rockhounding spot in Capitol Planning Region, Connecticut. Reported finds include agate, prehnite. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Capitol Planning Region
State: Connecticut
Nearest road: Tunxis Street
Postcode: 06032
Coordinates: 41.71464, -72.84638

Geology at Farmington

This spot sits on New Haven Arkose, mapped as arkose that formed roughly 235 to 175 million years ago. Tough silica like agate, jasper, and chert typically weathers out of beds like these and collects as float in drainages and on deflation surfaces.

Mapped unit: New Haven Arkose
Age: 235–175 Ma (Late Triassic to Early Jurassic)
Rock types: arkose
Elevation: 170 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 Farmington

Best months: March to November. Typical highs run 85°F in midsummer and 38°F in midwinter, with winter lows near 18°F.

Climate normals: NOAA 1991-2020 monthlies, BURLINGTON station (7 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.

Sources: RockHoundR public spot dataset, app land overlays, and local agency review before each trip.

Found at Farmington

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 Farmington.

Across the state line from Farmington

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

Farmington FAQ

Where is Farmington?+

Farmington is in Capitol Planning Region, Connecticut, at 41.71464, -72.84638. Nearest road: Tunxis Street.

What rocks and minerals can you find at Farmington?+

Farmington is reported to produce Agate, Prehnite.

Is collecting allowed at Farmington?+

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 Farmington?+

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 Farmington?+

The most comfortable months at Farmington are March to November.

How do I get to Farmington?+

Open the directions link to navigate to 41.71464, -72.84638 in Google Maps. The nearest road is Tunxis Street.

More rockhounding in Connecticut

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Open Farmington on the map

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