RockWoofFound alongside
Mica
Mohs 2–3. Peels into thin, flexible, shiny sheets. Mindat
68 sites
Quartz
Mohs 7. Six-sided points; smoky quartz is NH’s state gem. Mindat
20 sites
Feldspar
Mohs 6–6.5. Blocky crystals with flat cleavage faces. Mindat
11 sites
Pyrite
Mohs 6–6.5. Brassy “fool’s gold,” often cubic. Mindat
10 sites
Gold
Mohs 2.5–3. Soft, heavy and bright yellow; it doesn’t tarnish. Mindat
9 sites
Silver
Mohs 2.5–3. Native silver tarnishes black. Mindat
8 sites
Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.
By county
San Bernardino County (16) · Los Angeles County (9) · Riverside County (8) · San Diego County (5) · Imperial County (5) · Inyo County (3) · Fresno County (3) · Mariposa County (2) · Siskiyou County (2) · Tuolumne County (2) · Kern County (2) · Sierra County (2) · Plumas County (2) · Madera County (1) · Calaveras County (1) · Mono County (1) · San Luis Obispo County (1) · Ventura County (1) · Trinity County (1) · El Dorado 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 |
| Kramer Borate Deposit | Boron-Borates | Borax, Colemanite, Kernite, Tincalconite | Producer | 35.041, -117.688 |
| Bishop Concentrate and Cleaning Co. | Tungsten | Chalcopyrite, Chrysocolla, Scheelite | Past Producer | 37.274, -118.400 |
| Jesse Belle | — | Chalcopyrite, Cobaltite, Pyrite, Pyrrhotite, Sphalerite | Past Producer | 37.143, -119.950 |
| Blue Ledge | Copper, Zinc | Chalcopyrite, Galena, Limonite, Malachite, Pyrite, Pyrrhotite, Sphalerite | Past Producer | 41.950, -123.101 |
| White Christmas | Silica, Diatomite | Diatomite | Past Producer | 32.712, -116.031 |
| Sixteen-to-One Mine | Gold | Gold, Arsenopyrite, Pyrite | Producer | 39.465, -120.843 |
| Pacific Quartz Mine | Gold | Gold, Arsenopyrite, Pyrite | Past Producer | 38.724, -120.798 |
| Sugarman and Negro | Gold, Silver | Gold, Petzite, Sylvanite, Silver, Quartz | Past Producer | 38.008, -120.371 |
| Waterfall Prospect | Gold | Gold, Pyrite | Past Producer | 37.354, -118.062 |
| Bluebird Kyanite | Kyanite | Kyanite | Past Producer | 32.849, -114.803 |
| Dorothy Ann | Mica | Muscovite | Occurrence | 34.394, -118.280 |
| Apex | Mica | Muscovite | Occurrence | 34.395, -118.272 |
| Independent American Mining Co. | Mica | Muscovite | Past Producer | 34.318, -118.339 |
| Mica I | Mica | Muscovite | Occurrence | 34.394, -118.280 |
| Eagle-Shawmut Mine | Gold | Pyrite, Gold | Past Producer | 37.867, -120.396 |
| Lakeview Quartzite Deposit | Silica | Quartz, Quartzite | Past Producer | 36.575, -117.961 |
| Mica Gem | — | Scheelite | Occurrence | 32.633, -116.134 |
| Brushy Cyn. Deposits | Mica | — | Producer | 37.348, -120.068 |
| Drifted Snow | Mica | — | Producer | 32.858, -114.796 |
| White Water Sericite-Schist Deposit | Mica | — | Occurrence | 33.954, -116.635 |
| Ruth Hill | Mica | — | Producer | 36.724, -119.206 |
| Western Non-Metallic | Mica | — | Past Producer | 32.862, -114.800 |
| Mission Mine | Gemstone | — | Producer | 33.378, -117.068 |
| Drifted Snow Mine | Mica | — | Past Producer | 32.849, -114.807 |
| Black Canyon Deposit | Feldspar | — | Past Producer | 33.122, -116.820 |
| Oriental Mine | Gold | — | Past Producer | 39.460, -120.859 |
| Deer Tick Nos. 1-8 | Talc-Soapstone | — | Unknown | 34.245, -117.427 |
| Dorothy Ann | Mica | — | Past Producer | 34.401, -118.280 |
| Apex | Mica | — | Prospect | 34.401, -118.263 |
| Mica Prospect | Mica | — | Prospect | 33.644, -116.568 |
| Ida V. Mine | Mica | — | Past Producer | 33.578, -116.763 |
| Keystone and Lucky Jim | Feldspar | — | Past Producer | 34.237, -117.216 |
| Silver Sericite #1 Mine | Talc-Soapstone | — | Past Producer | 35.111, -116.445 |
| Vogelsang Mine | — | — | Past Producer | 38.153, -120.755 |
| Inspiration | Mica | — | Prospect | 37.598, -118.319 |
| Unnamed Sericite/Talc Mine | Talc-Soapstone | — | Past Producer | 35.103, -116.456 |
| Mission Mine | Gemstone | — | Past Producer | 33.378, -117.068 |
| Unnamed Mica Occurrence | Mica | — | Occurrence | 34.271, -116.634 |
| Golden Age | Tungsten | — | Prospect | 35.744, -118.050 |
| Marter-White Deposit | Mica | — | Past Producer | 34.662, -117.284 |
| Ritchie & Paulson | Beryllium | — | Occurrence | 33.809, -117.094 |
| Eagle Mountain Mine and Plant | Iron | — | Past Producer | 33.900, -115.487 |
| Marter-White Deposit | Mica | — | Past Producer | 34.656, -117.285 |
| Rose Property Sericite Pit | Mica | — | Producer | 35.259, -115.283 |
| Music Valley Deposit | REE | — | Occurrence | 33.984, -115.933 |
| Unnamed Prospect | Feldspar | — | Prospect | 35.381, -120.538 |
| Unnamed Prospect | Mica | — | Prospect | 35.745, -115.754 |
| Alamo Mountain Mica Mine | Mica | — | Past Producer | 34.700, -118.953 |
| Black Bear | — | — | Past Producer | 40.041, -123.166 |
| Independent American Mining Co. | Mica | — | Past Producer | 34.314, -118.338 |
| Johnson Deposit | Mica | — | Past Producer | 33.920, -116.367 |
| Unnamed Sericite Occurrence | Mica | — | Occurrence | 35.033, -116.784 |
| Ruth Hill | Mica | — | Past Producer | 36.724, -119.206 |
| Brushy Cyn. Deposits | Mica | — | Prospect | 37.348, -120.068 |
| Lights Creek Copper Deposits | Copper | — | Past Producer | 40.217, -120.784 |
| Unnamed Prospect | Mica | — | Past Producer | 34.343, -115.322 |
| Unnamed Scrap Mica Occurrence | Mica | — | Occurrence | 35.099, -116.947 |
| Unnamed Mica Prospect | Mica | — | Prospect | 35.074, -116.298 |
| Snow White Deposit | Mica | — | Past Producer | 34.664, -117.164 |
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