Singepole Mountain Quarry: Almandine Garnet & Beryl Rockhounding in Oxford County, Maine

Updated June 2026

Singepole Mountain Quarry is a mapped rockhounding spot in Oxford County, Maine. Reported finds include almandine garnet, beryl, biotite, fluorapatite, microcline, and more. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Oxford County
State: Maine
Nearest road: Singepole Trail
Postcode: 04281
Coordinates: 44.22669, -70.45361

Geology at Singepole Mountain Quarry

This spot sits on Sangerville Formation, mapped as shale and sandstone that formed roughly 435 to 425 million years ago. Sedimentary rock like this erodes unevenly, so the most productive collecting is typically along fresh cuts, badland slopes, and active drainages.

Mapped unit: Sangerville Formation
Age: 435–425 Ma (Wenlock)
Rock types: shale and sandstone
Elevation: 1,370 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 Singepole Mountain Quarry

Best months: April to October. Typical highs run 76°F in midsummer and 25°F in midwinter, with winter lows near 7°F.

Climate normals: NOAA 1991-2020 monthlies, TURNER 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.

State guidance last verified: April 1, 2026

Maine Geological Survey
Maine Mineral & Gem Museum
Acadia National Park rules
Community submissions reviewed against published agency rules

Found at Singepole Mountain 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 Singepole Mountain Quarry.

Across the state line from Singepole Mountain Quarry

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

Singepole Mountain Quarry FAQ

Where is Singepole Mountain Quarry?+

Singepole Mountain Quarry is in Oxford County, Maine, at 44.22669, -70.45361. Nearest road: Singepole Trail.

What rocks and minerals can you find at Singepole Mountain Quarry?+

Singepole Mountain Quarry is reported to produce Almandine Garnet, Beryl, Biotite, Fluorapatite, Microcline, Muscovite, Quartz, Schorl.

Is collecting allowed at Singepole Mountain 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 Singepole Mountain Quarry?+

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 Singepole Mountain Quarry?+

The most comfortable months at Singepole Mountain Quarry are April to October.

How do I get to Singepole Mountain Quarry?+

Open the directions link to navigate to 44.22669, -70.45361 in Google Maps. The nearest road is Singepole Trail.

More rockhounding in Maine

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