Northfield: Fluorite & Garnet Rockhounding in Franklin County, Massachusetts

Updated June 2026

Northfield is a mapped rockhounding spot in Franklin County, Massachusetts. Reported finds include fluorite, garnet, golden beryl. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Franklin County
State: Massachusetts
Nearest road: Mount Hermon Station Road
Postcode: 01360
Coordinates: 42.69301, -72.47751

Geology at Northfield

This spot sits on Partridge Formation (includes Brimfield Schist of Emerson, 1917), mapped as mica schist that formed roughly 455 to 445 million years ago. Metamorphic belts like this often host pegmatite dikes, the coarse-crystal bodies that typically carry beryl, tourmaline, and sheet mica.

Mapped unit: Partridge Formation (includes Brimfield Schist of Emerson, 1917)
Age: 455–445 Ma (Late Ordovician)
Rock types: mica schist
Elevation: 390 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 Northfield

Best months: April to November. Typical highs run 82°F in midsummer and 32°F in midwinter, with winter lows near 14°F.

Climate normals: NOAA 1991-2020 monthlies, GREENFIELD #3 station (10 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 Northfield

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 Northfield.

Across the state line from Northfield

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

Northfield FAQ

Where is Northfield?+

Northfield is in Franklin County, Massachusetts, at 42.69301, -72.47751. Nearest road: Mount Hermon Station Road.

What rocks and minerals can you find at Northfield?+

Northfield is reported to produce Fluorite, Garnet, Golden Beryl.

Is collecting allowed at Northfield?+

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 Northfield?+

A rock hammer, a pry bar, gloves, and safety glasses suit pegmatite ground. Work weathered zones and check dump piles; coarse crystals often sit in decomposed rock.

When is the best time to visit Northfield?+

The most comfortable months at Northfield are April to November.

How do I get to Northfield?+

Open the directions link to navigate to 42.69301, -72.47751 in Google Maps. The nearest road is Mount Hermon Station Road.

More rockhounding in Massachusetts

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Open Northfield on the map

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