Adrian’s Quarry: Calcite & Chalcopyrite Rockhounding in Boone County, Missouri

Plan your visit

Generally open to casual rockhounding

County

Boone County

State

Missouri

Nearest road

US 63

Postcode

65039

Coordinates

38.67230, -92.22901

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

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.

Best time to visit Adrian’s Quarry

Comfortable months (45 to 90°F highs)

Best months: February to November. Typical highs run 88°F in midsummer and 39°F in midwinter, with winter lows near 21°F.

Climate normals: NOAA 1991-2020 monthlies, JEFFERSON CITY WTP station (7 mi away).

Geology at Adrian’s Quarry

This spot sits on ground mapped as limestone and sandstone that formed roughly 420 to 360 million years ago. Carbonate rock like this dissolves and weathers readily, so fresh road cuts, quarries, and creek exposures are typically the most productive ground.

Age

420–360 Ma (Early Devonian to Late Devonian)

Rock types

limestone and sandstone

Elevation

730 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.

• Missouri Geological Survey
• Mark Twain National Forest
• Missouri State Parks rules
• Community submissions reviewed against published agency rules