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

Updated June 2026

Adrian’s Quarry is a mapped rockhounding spot in Boone County, Missouri. Reported finds include calcite, chalcopyrite, marcasite, millerite, pyrite. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Boone County
State: Missouri
Nearest road: US 63
Postcode: 65039
Coordinates: 38.67230, -92.22901

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.

Best time to visit Adrian’s Quarry

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).

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 Adrian’s 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 Adrian’s Quarry.

Adrian’s Quarry FAQ

Where is Adrian’s Quarry?+

Adrian’s Quarry is in Boone County, Missouri, at 38.67230, -92.22901. Nearest road: US 63.

What rocks and minerals can you find at Adrian’s Quarry?+

Adrian’s Quarry is reported to produce Calcite, Chalcopyrite, Marcasite, Millerite, Pyrite.

Is collecting allowed at Adrian’s 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 Adrian’s Quarry?+

A rock hammer, gloves, and safety glasses are enough for oxidized copper ground. Look for green and blue staining on weathered rock and in old dump piles.

When is the best time to visit Adrian’s Quarry?+

The most comfortable months at Adrian’s Quarry are February to November.

How do I get to Adrian’s Quarry?+

Open the directions link to navigate to 38.67230, -92.22901 in Google Maps. The nearest road is US 63.

More rockhounding in Missouri

See all 94 Missouri spots →

Open Adrian’s Quarry on the map

Use the RockHoundR app for live land overlays, weather, geology, directions, and saved finds.