Rocks & minerals reported in California
78 rocks, minerals, gemstones, and fossils reported across 97 mapped rockhounding spots in California. Each entry links to a field-ID guide; the state-specific links open the list of spots known to produce that material in California.
Most-reported in California
Ranked by the number of California spots in this dataset that mention each material.
Jaspercommonmineral · Mohs 6.5-7red, yellow, brown
Agatecommonmineral · Mohs 6.5-7white, gray, blue
Chalcedonycommonmineral · Mohs 6.5-7white, gray, blue
Petrified Woodcommonfossil · Mohs 6.5-7brown, red, yellow
Quartzcommonmineral · Mohs 7colorless, white, gray
Jadecommonmineral · Mohs 6-7green, white, lavender
Serpentinecommonmineral · Mohs 2.5-5.5green, yellow, brown
Rhodonitecommonmineral · Mohs 5.5-6.5pink, reddish-pink, brown
Chromitecommonmineral · Mohs 5.5black, brownish-black
Goldcommonmineral · Mohs 2.5-3gold-yellow, pale yellow, orange-yellow
Jadeiteraremineral · Mohs 6.5-7green, white, lavender
Lepidolitecommonmineral · Mohs 2.5-3lilac, pink, violet
Where in California to find each
State-specific spot lists. Each link opens the California subset of mapped rockhounding spots for that mineral.
Pack the California encyclopedia in your pocket
Open RockHoundR for offline lookups, mapped spots, and live land overlays.
