Lane Trap Rock Quarry: Amethyst & Prehnite Rockhounding in Hampshire County, Massachusetts

Updated June 2026

Lane Trap Rock Quarry is a mapped rockhounding spot in Hampshire County, Massachusetts. Reported finds include amethyst, prehnite, datolite. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Hampshire County
State: Massachusetts
Nearest road: Notch Link
Coordinates: 42.30124, -72.52708

Geology at Lane Trap Rock Quarry

This spot sits on Holyoke Basalt, mapped as basalt that formed roughly 200 to 175 million years ago. Cavities and seams in volcanic rock like this are the kind of setting where quartz and amethyst crystals tend to grow.

Mapped unit: Holyoke Basalt
Age: 200–175 Ma (Early Jurassic)
Rock types: basalt
Elevation: 580 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 Lane Trap Rock Quarry

Best months: April to November. Typical highs run 82°F in midsummer and 32°F in midwinter, with winter lows near 12°F.

Climate normals: NOAA 1991-2020 monthlies, AMHERST station (6 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 Lane Trap Rock Quarry

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 Lane Trap Rock Quarry.

Across the state line from Lane Trap Rock Quarry

Lane Trap Rock Quarry 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.

Lane Trap Rock Quarry FAQ

Where is Lane Trap Rock Quarry?+

Lane Trap Rock Quarry is in Hampshire County, Massachusetts, at 42.30124, -72.52708. Nearest road: Notch Link.

What rocks and minerals can you find at Lane Trap Rock Quarry?+

Lane Trap Rock Quarry is reported to produce Amethyst, Prehnite, Datolite.

Is collecting allowed at Lane Trap Rock Quarry?+

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 Lane Trap Rock Quarry?+

A rock hammer, a small pry bar, gloves, and safety glasses cover most crystal ground. A screen helps in loose pocket soil, and newspaper protects points on the way out.

When is the best time to visit Lane Trap Rock Quarry?+

The most comfortable months at Lane Trap Rock Quarry are April to November.

How do I get to Lane Trap Rock Quarry?+

Open the directions link to navigate to 42.30124, -72.52708 in Google Maps. The nearest road is Notch Link.

More rockhounding in Massachusetts

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Open Lane Trap Rock Quarry on the map

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