Best spot

Crystal Hill Area, Kofa National Wildlife Refuge: Quartz Rockhounding in La Paz County, Arizona

Updated July 2026

Crystal Hill is the only place on the 665,400-acre Kofa National Wildlife Refuge where recreational rock and mineral collecting is permitted, per the USFWS Public Use and Hunting Regulations, which restrict it to a designated 1.5-square-mile area and prohibit collecting across the entire remainder of the refuge. Clear and white prismatic quartz crystals weather out into the washes and onto the rocky slopes. It is significant because federal wildlife refuges almost universally prohibit collecting, making this a rare and legally documented exception rather than a tolerated custom. Reported finds include quartz. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: La Paz County
State: Arizona
Nearest road: Crystal Hill Road
Coordinates: 33.52693, -114.11652

Geology at Crystal Hill Area, Kofa National Wildlife Refuge

This spot sits on sedimentary rocks with minor volcanic rocks, mapped as arenite and conglomerate that formed roughly 160 to 72 million years ago. Sedimentary rock like this erodes unevenly, so the most productive collecting is typically along fresh cuts, badland slopes, and active drainages.

Mapped unit: sedimentary rocks with minor volcanic rocks
Age: 160–72 Ma (Late Jurassic to Late Cretaceous)
Rock types: arenite and conglomerate
Elevation: 1,680 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 Crystal Hill Area, Kofa National Wildlife Refuge

Best months: October to April. Typical highs run 106°F in midsummer and 64°F in midwinter, with winter lows near 37°F. Summer heat here is intense, so carry more water than you think you need and work the early morning.

Climate normals: NOAA 1991-2020 monthlies, QUARTZSITE station (12 mi away), adjusted for elevation.

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.

State guidance last verified: April 1, 2026

BLM Arizona — Recreational Mineral Collecting
Arizona Geological Survey
Arizona State Land Department recreation permits
Community submissions reviewed against published agency rules

Found at Crystal Hill Area, Kofa National Wildlife Refuge

Each chip opens all spots that produce that material; the encyclopedia link opens the full ID and field guide.

Quartz Encyclopedia →

Nearby rockhounding spots

Other rockhounding spots within driving distance of Crystal Hill Area, Kofa National Wildlife Refuge.

Across the state line from Crystal Hill Area, Kofa National Wildlife Refuge

Crystal Hill Area, Kofa National Wildlife Refuge is close enough to the Arizona border that the next-closest rockhounding spots are in a neighboring state. Worth knowing if you are already on the road.

Unnamed Location (Fire Agate)Top pick in CaliforniaRiverside County, California · 41 mi awayChalcedony, Fire Agate

Crystal Hill Area, Kofa National Wildlife Refuge FAQ

Where is Crystal Hill Area, Kofa National Wildlife Refuge?+

Crystal Hill Area, Kofa National Wildlife Refuge is in La Paz County, Arizona, at 33.52693, -114.11652. Nearest road: Crystal Hill Road.

What rocks and minerals can you find at Crystal Hill Area, Kofa National Wildlife Refuge?+

Crystal Hill Area, Kofa National Wildlife Refuge is reported to produce Quartz.

Is collecting allowed at Crystal Hill Area, Kofa National Wildlife Refuge?+

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 Crystal Hill Area, Kofa National Wildlife Refuge?+

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 Crystal Hill Area, Kofa National Wildlife Refuge?+

The most comfortable months at Crystal Hill Area, Kofa National Wildlife Refuge are October to April. Summer heat here is intense, so carry more water than you think you need and work the early morning.

How do I get to Crystal Hill Area, Kofa National Wildlife Refuge?+

Open the directions link to navigate to 33.52693, -114.11652 in Google Maps. The nearest road is Crystal Hill Road.

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