CCC Pegmatite: Albite & Beryl Rockhounding in Lower Connecticut River Valley Planning Region, Connecticut

Plan your visit

Permission required before collecting

County

Lower Connecticut River Valley Planning Region

State

Connecticut

Nearest road

Filley Road

Postcode

06438

Coordinates

41.45870, -72.51620

Coordinates are approximate. Confirm the exact ground in the RockHoundR app, where land overlays show which agency manages the area.

Land & collecting status

Permission required before collecting

Requires landowner or agency permission before any collecting. Do not enter without explicit authorization.

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.

Best time to visit CCC Pegmatite

Comfortable months (45 to 90°F highs)

Best months: March to November. Typical highs run 84°F in midsummer and 37°F in midwinter, with winter lows near 18°F.

Climate normals: NOAA 1991-2020 monthlies, MERIDEN MARKHAM MUNI AP station (17 mi away).

Geology at CCC Pegmatite

This spot sits on Collins Hill Formation, mapped as schist that formed roughly 470 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

Collins Hill Formation

Age

470–445 Ma (Middle Ordovician to Late Ordovician)

Rock types

schist

Elevation

200 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.

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.

• Connecticut Geological Survey
• CT DEEP state land rules
• Community submissions reviewed against published agency rules