Miami: Aragonite & Barite Rockhounding in Ottawa County, Oklahoma

Updated June 2026

Miami is a mapped rockhounding spot in Ottawa County, Oklahoma. Reported finds include aragonite, barite, calcite, chalcopyrite, chert, and more. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Check locally
County: Ottawa County
State: Oklahoma
Nearest road: CR S620
Postcode: 74363
Coordinates: 36.98491, -94.76006

Geology at Miami

This spot sits on Pitkin + Fayetteville + Batesville + Hindsville + Moorefield Formations, mapped as limestone and shale that formed roughly 360 to 325 million years ago. Chert and agate nodules typically form inside carbonate rock like this and weather out as tough, waxy lumps in soils and creek beds.

Mapped unit: Pitkin + Fayetteville + Batesville + Hindsville + Moorefield Formations
Age: 360–325 Ma (Mississippian)
Rock types: limestone and shale
Elevation: 860 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 Miami

Best months: September to June. Typical highs run 91°F in midsummer and 47°F in midwinter, with winter lows near 24°F.

Climate normals: NOAA 1991-2020 monthlies, MIAMI station (10 mi away).

Land & collecting status

Confirm rules before collecting

Land status here is not confirmed. Verify with the managing agency before collecting — federal, state, and tribal rules differ.

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 Miami

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 Miami.

Across the state line from Miami

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

Miami FAQ

Where is Miami?+

Miami is in Ottawa County, Oklahoma, at 36.98491, -94.76006. Nearest road: CR S620.

What rocks and minerals can you find at Miami?+

Miami is reported to produce Aragonite, Barite, Calcite, Chalcopyrite, Chert, Dolomite, Galena, Gypsum, Marcasite, Quartz, Pyrite, Sphalerite.

Is collecting allowed at Miami?+

Confirm rules before collecting. Land status here is not confirmed. Verify with the managing agency before collecting — federal, state, and tribal rules differ. Always confirm current rules with the managing agency before a trip.

What tools should I bring to Miami?+

Most agate and jasper is surface float: bring a spray bottle, a pick or small shovel, and a sturdy bag. Wet stones show their banding and translucence.

When is the best time to visit Miami?+

The most comfortable months at Miami are September to June.

How do I get to Miami?+

Open the directions link to navigate to 36.98491, -94.76006 in Google Maps. The nearest road is CR S620.

More rockhounding in Oklahoma

See all 36 Oklahoma spots →

Open Miami on the map

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