Road along Agua Fria River: Quartz Rockhounding in Maricopa County, Arizona

Quick details

Access

Public area

County

Maricopa County

State

Arizona

Nearest road

Wadell Canal Cap

Coordinates

33.80980, -112.26985

Geology at Road along Agua Fria River

This spot sits on Late and middle Pleistocene surficial deposits, mapped as gravel and sand that formed within roughly the last 3 million years. Loose deposits like these are float-collecting ground: erosion keeps moving durable rocks and minerals into gravel bars, cutbanks, and washes.

Mapped unit

Late and middle Pleistocene surficial deposits

Age

3 Ma to present (Pleistocene)

Rock types

gravel and sand

Elevation

1,420 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.

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 Road along Agua Fria River

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

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