Mangum: Alabaster & Quartz Rockhounding in Greer County, Oklahoma

Updated June 2026

Mangum is a mapped rockhounding spot in Greer County, Oklahoma. Reported finds include alabaster, quartz. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Check locally
County: Greer County
State: Oklahoma
Nearest road: CR E1400
Postcode: 73547
Coordinates: 34.98461, -99.40888

Geology at Mangum

This spot sits on Wichita Granite Group, mapped as granite that formed roughly 510 to 495 million years ago. Granitic ground like this typically carries quartz veins and pockets, and weathered crystals tend to collect in the soils and drainages below.

Mapped unit: Wichita Granite Group
Age: 510–495 Ma (Middle Cambrian)
Rock types: granite
Elevation: 1,770 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 Mangum

Best months: September to June. Typical highs run 94°F in midsummer and 51°F in midwinter, with winter lows near 25°F.

Climate normals: NOAA 1991-2020 monthlies, MANGUM station (8 mi away), adjusted for elevation.

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 Mangum

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 Mangum.

Across the state line from Mangum

Mangum 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.

General AreaChildress County, Texas · 47 mi awayAlabaster

Mangum FAQ

Where is Mangum?+

Mangum is in Greer County, Oklahoma, at 34.98461, -99.40888. Nearest road: CR E1400.

What rocks and minerals can you find at Mangum?+

Mangum is reported to produce Alabaster, Quartz.

Is collecting allowed at Mangum?+

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 Mangum?+

A rock hammer, a small pry bar, gloves, and safety glasses cover most crystal ground. A screen helps in loose pocket soil, and newspaper protects points on the way out.

When is the best time to visit Mangum?+

The most comfortable months at Mangum are September to June.

How do I get to Mangum?+

Open the directions link to navigate to 34.98461, -99.40888 in Google Maps. The nearest road is CR E1400.

More rockhounding in Oklahoma

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Open Mangum on the map

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