Argonaut Mine: Calcite & Fluorite Rockhounding in Windsor County, Vermont

Plan your visit

Permission required before collecting

County

Windsor County

State

Vermont

Nearest road

East Hill Road

Postcode

05140

Coordinates

43.36662, -72.67487

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 Argonaut Mine

Comfortable months (45 to 90°F highs)

Best months: April to October. Typical highs run 80°F in midsummer and 28°F in midwinter, with winter lows near 5°F.

Climate normals: NOAA 1991-2020 monthlies, CAVENDISH station (4 mi away), adjusted for elevation.

Geology at Argonaut Mine

This spot sits on Moretown Formation - ?pinstriped? granofels member, mapped as granofels and quartzite that formed roughly 540 to 470 million years ago. Metamorphic terrain like this commonly hosts vein and replacement mineralization, and old workings typically mark the productive zones.

Mapped unit

Moretown Formation - ?pinstriped? granofels member

Age

540–470 Ma (Cambrian to Early Ordovician)

Rock types

granofels and quartzite

Elevation

1,480 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.

• Vermont Geological Survey
• Green Mountain National Forest
• Vermont State Parks, Camp Plymouth
• Community submissions reviewed against published agency rules