Lead Pipe Spring Area: Blue Agate & Chalcedony Rockhounding in San Bernardino County, California

Updated July 2026

Lead Pipe Spring Area is a mapped rockhounding spot in San Bernardino County, California. Reported finds include blue agate, chalcedony, jasper, opal, thundereggs. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Permission required
County: San Bernardino County
State: California
Nearest road: Lead Pipe Spring Road
Coordinates: 35.46655, -117.16654

Geology at Lead Pipe Spring Area

This spot sits on alluvium and marine deposits, mapped as coarse alluvium that formed within roughly the last 5 million years. Gravels like these concentrate whatever survives the river: agate, jasper, and other tough silica typically show up as rounded, waxy stones.

Mapped unit: alluvium and marine deposits
Age: 5 Ma to present (Pliocene to Holocene)
Rock types: coarse alluvium
Elevation: 2,890 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 Lead Pipe Spring Area

Best months: October to May. Typical highs run 103°F in midsummer and 56°F in midwinter, with winter lows near 30°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, TRONA station (24 mi away), adjusted for elevation.

Land & collecting status

Permission required before collecting

Requires landowner or agency permission before any collecting. Do not enter without explicit authorization.

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

Found at Lead Pipe Spring Area

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 Lead Pipe Spring Area.

Lead Pipe Spring Area FAQ

Where is Lead Pipe Spring Area?+

Lead Pipe Spring Area is in San Bernardino County, California, at 35.46655, -117.16654. Nearest road: Lead Pipe Spring Road.

What rocks and minerals can you find at Lead Pipe Spring Area?+

Lead Pipe Spring Area is reported to produce Blue Agate, Chalcedony, Jasper, Opal, Thundereggs.

Is collecting allowed at Lead Pipe Spring Area?+

Permission required before collecting. Requires landowner or agency permission before any collecting. Do not enter without explicit authorization. Always confirm current rules with the managing agency before a trip.

What tools should I bring to Lead Pipe Spring Area?+

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 Lead Pipe Spring Area?+

The most comfortable months at Lead Pipe Spring Area are October to May. Summer heat here is intense, so carry more water than you think you need and work the early morning.

How do I get to Lead Pipe Spring Area?+

Open the directions link to navigate to 35.46655, -117.16654 in Google Maps. The nearest road is Lead Pipe Spring Road.

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