Rouse Hill: Amazonite & Idocrase Rockhounding in Riverside County, California

Plan your visit

Generally open to casual rockhounding

County

Riverside County

State

California

Nearest road

Rouse Hill Road

Coordinates

33.67259, -116.77238

Coordinates are approximate. Confirm the exact ground in the RockHoundR app, where land overlays show which agency manages the area.

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.

Best time to visit Rouse Hill

Comfortable months (45 to 90°F highs)

Conditions here are workable year-round, with typical highs from 56°F in winter to 86°F in summer.

Climate normals: NOAA 1991-2020 monthlies, IDYLLWILD FIRE DEPT station (7 mi away), adjusted for elevation.

Geology at Rouse Hill

This spot sits on granitic rocks, unit 2 (Peninsular Ranges), mapped as tonalite that formed roughly 175 to 66 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

granitic rocks, unit 2 (Peninsular Ranges)

Age

175–66 Ma (Middle Jurassic to Late Cretaceous)

Rock types

tonalite

Elevation

5,160 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.

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 California, Recreational mineral collecting
• California Geological Survey
• CDFW, Suction Dredge Mining Permit Program
• Community submissions reviewed against published agency rules