RockWoofFound alongside
Mica
Mohs 2–3. Peels into thin, flexible, shiny sheets. Mindat
12 sites
Quartz
Mohs 7. Six-sided points; smoky quartz is NH’s state gem. Mindat
8 sites
Feldspar
Mohs 6–6.5. Blocky crystals with flat cleavage faces. Mindat
5 sites
Fluorite
Mohs 4. Cubes in purple, green or yellow; many glow under UV. Mindat
5 sites
Magnetite
Mohs 5.5–6.5. Black and strongly magnetic. Mindat
4 sites
Pyrite
Mohs 6–6.5. Brassy “fool’s gold,” often cubic. Mindat
3 sites
Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.
By county
Hudspeth County (4) · Llano County (3) · Culberson County (2) · Burleson County (1) · Presidio County (1) · Lee County (1)
Sites
| Site | Commodity | Minerals recorded | Status | Approx. location |
|---|---|---|---|---|
| Baringer Hill Mine | REE, Feldspar, Fluorine-Fluorite, Zirconium, Beryllium | Allanite, Chalcopyrite, Fergusonite, Gadolinite, Molybdenite, Polycrase, Sphalerite, Yttrialite | Past Producer | 30.778, -98.433 |
| Cave Peak Deposit | Molybdenum | Antimony, Cassiterite, Chalcocite, Chalcopyrite, Chrysocolla, Copper, Covellite, Cuprite, Ferrimolybdite, Goethite, Huebnerite, Ilsemannite, Jarosite, Lepidocrocite, Malachite, Marcasite, Molybdenite, Powellite, Pyrite, Sphalerite, Wolframite | Prospect | 31.444, -104.880 |
| Kiam Prospect | Bismuth, Molybdenum, Gold | Bismuthinite, Feldspar, Molybdenite, Muscovite | Occurrence | 30.634, -98.526 |
| Casa Piedra Deposit | Zeolites | Clinoptilolite | Occurrence | 29.739, -104.042 |
| Williams Mine | Feldspar | Feldspar | Past Producer | 30.669, -98.474 |
| Yegua Creek Placer District | — | Ilmenite, Magnetite, Monazite, Zircon | Occurrence | 30.316, -96.635 |
| Falkenburg-Blackburn Prospect | Titanium, Metal, Zirconium, Thorium | Ilmenite, Magnetite, Zircon | Occurrence | 30.316, -96.649 |
| Mica Mine | Mica | Muscovite | Past Producer | 30.856, -104.911 |
| Alamo Mica Quarry | Mica | Muscovite | Producer | 30.844, -104.902 |
| Unnamed Prospect | Mica | Muscovite | Occurrence | 30.847, -104.900 |
| Unnamed Mine | Mica | Muscovite | Past Producer | 30.845, -104.906 |
| Cave Peak Molybdenum Deposit | Molybdenum | — | Prospect | 31.452, -104.878 |
Back to Rockhounding in Texas.
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