RockWoofFound alongside
Feldspar
Mohs 6–6.5. Blocky crystals with flat cleavage faces. Mindat
159 sites
Quartz
Mohs 7. Six-sided points; smoky quartz is NH’s state gem. Mindat
36 sites
Gold
Mohs 2.5–3. Soft, heavy and bright yellow; it doesn’t tarnish. Mindat
29 sites
Pyrite
Mohs 6–6.5. Brassy “fool’s gold,” often cubic. Mindat
23 sites
Silver
Mohs 2.5–3. Native silver tarnishes black. Mindat
15 sites
Copper
Mohs 2.5–3. Native copper is soft and turns green as it weathers. Mindat
12 sites
Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.
By county
San Diego County (38) · Riverside County (29) · San Bernardino County (19) · Los Angeles County (18) · Kern County (8) · Inyo County (7) · El Dorado County (6) · Tulare County (5) · Imperial County (4) · Calaveras County (4) · Fresno County (3) · Amador County (2) · Tuolumne County (2) · Madera County (2) · Monterey County (2) · Plumas County (2) · Mariposa County (1) · San Benito County (1) · Trinity County (1) · Shasta County (1) · Sierra County (1) · San Luis Obispo County (1) · Orange County (1) · Mono County (1)
Sites (first 60)
| Site | Commodity | Minerals recorded | Status | Approx. location |
|---|---|---|---|---|
| San Gabriel Anorthosite | Aluminum, Titanium | Andesine, Ilmenite, Microcline, Apatite, Magnetite | Prospect | 34.387, -118.228 |
| Stanley Alumina-Silicate | Feldspar | Anorthosite | Occurrence | 34.393, -118.345 |
| Lambert's | Feldspar | Anorthosite | Producer | 34.431, -118.354 |
| Gates Chemical Company | Feldspar | Anorthosite | Past Producer | 34.436, -118.338 |
| Kramer Borate Deposit | Boron-Borates | Borax, Colemanite, Kernite, Tincalconite | Producer | 35.041, -117.688 |
| Pine Creek | Tungsten, Copper, Molybdenum, Gold | Bornite, Chalcopyrite, Covellite, Gold, Molybdenite, Powellite, Scheelite | Producer | 37.362, -118.704 |
| Norwegian | Gold, Silver | Bornite, Galena, Gold, Pyrite | Past Producer | 38.005, -120.482 |
| Lake Tecopa | Zeolites | Chabazite, Clinoptilolite, Erionite, Analcime, Phillipsite | Prospect | 35.923, -116.242 |
| Empire | Copper | Chalcopyrite, Cuprite, Malachite, Pyrite | Past Producer | 37.977, -120.636 |
| Central Eureka | Gold, Silver | Chalcopyrite, Galena, Gold, Pyrite, Silver, Sphalerite | Producer | 38.383, -120.798 |
| Brown | Gold | Chalcopyrite, Gold, Pyrite | Past Producer | 38.070, -120.539 |
| Powell | Copper | Chalcopyrite, Gold, Pyrite, Sphalerite | Past Producer | 36.231, -118.650 |
| Copper Mountain | Copper | Chalcopyrite, Molybdenite | Past Producer | 36.494, -121.205 |
| White Christmas | Silica, Diatomite | Diatomite | Past Producer | 32.712, -116.031 |
| Globe Consolidated | Gold | Galena, Gold | Past Producer | 40.880, -123.007 |
| Rickard | Gold | Gold | Past Producer | 40.920, -122.506 |
| Chileno | Gold, Silver | Gold, Pyrite | Past Producer | 37.997, -120.478 |
| Georgia Slide | Gold | Gold, Pyrite | Past Producer | 38.933, -120.847 |
| Black Oak | Gold | Gold, Pyrite | Past Producer | 38.858, -120.848 |
| Crystal | Gold | Gold, Pyrite | Past Producer | 38.635, -120.912 |
| Waterfall Prospect | Gold | Gold, Pyrite | Past Producer | 37.354, -118.062 |
| Georgia Slide | Gold | Gold, Pyrite | Past Producer | 38.925, -120.848 |
| Big Canyon Mine | Gold | Gold, Pyrite | Past Producer | 38.611, -120.905 |
| Gwin Mine | Gold | Gold, Pyrite, Arsenopyrite | Past Producer | 38.275, -120.758 |
| Old Eureka Mine | Gold | Gold, Pyrite, Arsenopyrite | Past Producer | 38.388, -120.800 |
| Big Canyon | Gold | Gold, Pyrite, Pyrrhotite | Past Producer | 38.611, -120.906 |
| Gwin Mine | Gold | Gold, Pyrite, Sphalerite | Past Producer | 38.267, -120.768 |
| Masonic District | Gold, Silver | Gold, Telluride, Galena, Argentite, Bornite, Chalcopyrite, Famatinite, Enargite, Malachite, Chrysocolla, Stibnite, Cinnabar, Barite | Past Producer | 38.358, -119.124 |
| Strawberry Mine | Tungsten | Powellite, Scheelite | Past Producer | 37.550, -119.289 |
| Magnolia & Pyavin | Tungsten, Gold | Scheelite | Past Producer | 35.700, -117.968 |
| White Porphyry Group | Gold | — | Past Producer | 37.629, -120.083 |
| Gordon Feldspar | Feldspar | — | Past Producer | 34.391, -118.254 |
| Vail | Feldspar | — | Occurrence | 34.437, -118.308 |
| Silica Mining and Products Co | Feldspar | — | Producer | 34.474, -118.176 |
| Riverside Portland Cement Company | Feldspar | — | Producer | 33.791, -117.108 |
| Ensley-Spaulding | Feldspar, Silica | — | Producer | 33.643, -117.086 |
| Encaustic Tiling Co | Feldspar, Silica | — | Producer | 33.591, -117.205 |
| Hoover Lakeside,Tunner Deposit | Feldspar | — | Producer | 32.823, -116.842 |
| Pacific Mine Campo | Feldspar | — | Producer | 32.664, -116.536 |
| Buckthorn Deposit | Feldspar | — | Producer | 32.774, -116.367 |
| Moore Deposit | Feldspar | — | Producer | 32.639, -116.110 |
| Bear Deposit | Feldspar | — | Producer | 33.171, -116.957 |
| Chicago-Pacific | Feldspar | — | Past Producer | 34.434, -118.344 |
| W H Childers | Feldspar | — | Producer | 37.046, -119.538 |
| Mcginty Mtn Deposit Dehesa Cornty | Feldspar | — | Producer | 32.755, -116.860 |
| Pearson Deposit | Feldspar | — | Producer | 33.368, -116.643 |
| Spanish Bayonet Deposit | Feldspar | — | Producer | 32.910, -116.649 |
| Ward and Williams Deposit | Feldspar | — | Producer | 32.689, -116.258 |
| Spar King Deposit | Feldspar | — | Producer | 33.394, -117.043 |
| Chicago-Pacific | Feldspar | — | Prospect | 34.445, -118.369 |
| Red Desert Mine | Feldspar | — | Occurrence | 32.691, -116.070 |
| Unnamed Mine | Feldspar | — | Prospect | 34.910, -117.438 |
| Jacumba Copper Co. Prospect | Feldspar | — | Prospect | 32.661, -116.132 |
| Black Canyon Deposit | Feldspar | — | Past Producer | 33.122, -116.820 |
| Unknwon Prospect | Gold | — | Prospect | 34.453, -114.871 |
| Mcginty Mountain Deposit | Feldspar | — | Past Producer | 32.754, -116.860 |
| Oriental Mine | Gold | — | Past Producer | 39.460, -120.859 |
| Carlsbad Deposit | Feldspar | — | Prospect | 33.359, -116.540 |
| Hoover | Feldspar | — | Past Producer | 32.825, -116.844 |
| Moore Deposit | Feldspar | — | Past Producer | 32.639, -116.110 |
Back to Rockhounding in California.
How we built this page: we counted named sites in the USGS Mineral Resources Data System (MRDS) for this area, left out sand, gravel, crushed stone, clay pits and unnamed sites, grouped them by Census county, and linked every site to its USGS record. We did not visit these sites, and MRDS does not tell you who owns the land or whether collecting is allowed.
Source: USGS Mineral Resources Data System (MRDS). USGS ceased systematic updates to MRDS around 2011, so status and details may be out of date. Each site links to its USGS record.
Updated