Himalaya Tourmaline Mine (Mesa Grande) — Rockhounding in San Diego County, California

Quick details

Access

Paid / fee dig

County

San Diego County

State

California

Nearest road

Porter Lane

Postcode

92036

Coordinates

33.07000, -116.60000

Land & collecting status

Pay-to-dig site

This is a fee-dig location. Hours, prices, and what you can keep vary by operator. Call ahead before driving out.

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 Himalaya Tourmaline Mine (Mesa Grande)

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

• TourmalineEncyclopedia →
• LepidoliteEncyclopedia →
• QuartzEncyclopedia →