RockWoofSketch map
Woof’s favorite find
Iron Reef Prospect
We picked it because its USGS record mentions 4 gem or collectible minerals (Quartz, Garnet, Gold, Silver) and 8 of our card minerals overall. No other named site here scores as high on both counts. USGS lists it as past producer for Silver, Zinc, Lead. Minerals mentioned: Quartz, Garnet, Gold, Magnetite, Pyrite, Galena, Copper, Silver. Approx. location 32.970, -110.325. USGS record.
Ask first: a USGS record doesn’t mean you can visit. Find out who owns the land and get permission before collecting.
Field cards: what kind of sites?
Explored or test-dug, with no recorded production.
Produced ore or material at some point in the past.
The mineral was noted here, without development.
Status not recorded.
Was producing when the record was made.
Status terms come from USGS MRDS records.
Mineral cards
Copper
Mohs 2.5–3. Native copper is soft and turns green as it weathers. Mindat
188 sites
Silver
Mohs 2.5–3. Native silver tarnishes black. Mindat
96 sites
Gold
Mohs 2.5–3. Soft, heavy and bright yellow; it doesn’t tarnish. Mindat
82 sites
Pyrite
Mohs 6–6.5. Brassy “fool’s gold,” often cubic. Mindat
45 sites
Fluorite
Mohs 4. Cubes in purple, green or yellow; many glow under UV. Mindat
42 sites
Quartz
Mohs 7. Six-sided points; smoky quartz is NH’s state gem. Mindat
37 sites
Galena
Mohs 2.5–2.75. Heavy, silvery lead ore that breaks into cubes. Mindat
34 sites
Magnetite
Mohs 5.5–6.5. Black and strongly magnetic. Mindat
8 sites
Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.
Minerals recorded here
Chrysocolla 41Malachite 39Chalcopyrite 34Galena 33Chalcocite 16Anglesite 14Sphalerite 14Pyrite 12Barite 11Psilomelane 10Bornite 8Wulfenite 8Commodities
Copper 154Silver 88Gold 81Lead 79Zinc 42Uranium 28Manganese 24Iron 16Fluorine-Fluorite 15Barium-Barite 14Sites (first 40)
| Site | Commodity | Minerals recorded | Status | Approx. location |
|---|---|---|---|---|
| Ash Peak | — | Actinolite | Occurrence | 32.753, -109.260 |
| Iron Reef Prospect | Silver, Zinc, Lead | Actinolite, Chalcopyrite, Covellite, Cuprite, Galena, Magnetite, Malachite, Pyrite, Specularite | Past Producer | 32.970, -110.325 |
| Peloncillo Mountains | Gemstone, Semiprecious Gemstone, Quartz | Agate, Chalcedony | Past Producer | 32.583, -109.251 |
| Terra Firma Prospect | Aluminum | Alunite | Occurrence | 32.919, -109.589 |
| San Simon Zeolite Deposits | Zeolites | Analcime, Chabazite, Clinoptilolite | Occurrence | 32.435, -109.458 |
| Nrg Mining Co. Claims | Zeolites | Analcime, Chabazite, Clinoptilolite, Erionite | Occurrence | 32.434, -109.374 |
| Quartzite Mountain | Garnet, Gemstone | Andradite, Garnet | Past Producer | 33.042, -110.355 |
| Arizona Mine | Silver, Lead | Anglesite, Argentite, Chalcopyrite, Galena, Sphalerite | Past Producer | 32.969, -110.360 |
| Dogwater Mine | Lead | Anglesite, Argentite, Chrysocolla, Galena, Malachite, Plumbojarosite, Wulfenite | Past Producer | 32.873, -110.315 |
| Grand Reef Mine | Lead, Copper | Anglesite, Barite, Chalcopyrite, Chrysocolla, Fluorite, Galena, Malachite, Sphalerite, Wulfenite | Past Producer | 32.891, -110.324 |
| Windsor Mine | Lead, Silver, Copper | Anglesite, Cerargyrite, Chalcocite, Galena, Malachite | Occurrence | 32.939, -110.337 |
| Ben Hur Mine | Lead | Anglesite, Cerussite, Galena | Past Producer | 32.949, -110.349 |
| Abe Reed Mine | Lead, Zinc, Silver | Anglesite, Chalcocite, Chalcopyrite, Chrysocolla, Galena | Past Producer | 32.984, -110.369 |
| Tenstrike Mine | Lead, Zinc, Copper | Anglesite, Chalcocite, Chalcopyrite, Galena, Linarite, Sphalerite | Past Producer | 32.907, -110.326 |
| Starlight Mine | Copper | Anglesite, Chalcopyrite, Chrysocolla, Cuprite, Galena, Malachite, Melaconite | Past Producer | 33.093, -110.364 |
| Orejana Mine | Lead, Copper | Anglesite, Chalcopyrite, Chrysocolla, Galena, Malachite | Prospect | 32.969, -110.373 |
| Ionia Claim | Lead | Anglesite, Chalcopyrite, Galena, Sphalerite, Wulfenite | Occurrence | 32.975, -110.329 |
| Sinn Fein Mine | Lead | Anglesite, Chrysocolla, Galena, Malachite, Pyrite, Sphalerite, Wulfenite | Past Producer | 35.978, -110.341 |
| Fairview Prospect | Lead | Anglesite, Chrysocolla, Wulfenite | Past Producer | 32.966, -110.363 |
| Bullis - Sandsman Group | Lead | Anglesite, Galena | Past Producer | 33.000, -110.167 |
| Silver Coin Mine | Lead | Anglesite, Galena, Plumbojarosite, Wulfenite | Past Producer | 32.838, -110.279 |
| Safford Deposit | Copper, Molybdenum | Antlerite, Bornite, Brochantite, Chalcanthite, Chalcocite, Chalcopyrite, Chrysocolla, Covellite, Cuprite, Galena, Gold, Malachite, Molybdenite, Pyrite, Sphalerite, Tenorite, Tetrahedrite, Turquoise | Past Producer | 32.942, -109.606 |
| San Juan Mine | Copper | Antlerite, Brochantite, Chalcocite, Chalcopyrite, Chrysocolla, Cuprite, Malachite, Molybdenite, Tenorite | Past Producer | 32.946, -109.653 |
| Sanchez Copper Deposit | Copper | Atacamite, Bornite, Chalcanthite, Chalcocite, Chalcopyrite, Chrysocolla, Copper, Cuprite, Delafossite, Gold, Molybdenite, Tenorite, Malachite, Brochantite | Past Producer | 32.881, -109.535 |
| Barium 1-8 | Barium-Barite, Lead | Barite | Occurrence | 32.768, -110.222 |
| Graham Prospect | Barium-Barite | Barite | Occurrence | 32.730, -110.116 |
| Copper Reef Mine | Lead, Copper | Barite, Bornite, Chalcocite, Chalcopyrite, Chrysocolla, Hematite, Malachite, Pyrite | Past Producer | 33.056, -110.415 |
| Barium King Group | Barium-Barite | Barite, Fluorite | Occurrence | 33.070, -110.347 |
| Mitchell Barite Prospect | Barium-Barite, Fluorine-Fluorite | Barite, Fluorite | Occurrence | 33.071, -110.320 |
| Landsman Prospect | Fluorine-Fluorite, Quartz, Barium-Barite | Barite, Fluorite, Quartz | Occurrence | 32.969, -110.326 |
| Marcotte Group | Barium-Barite, Copper, Silver, Gold | Barite, Fluorspar | Past Producer | 32.743, -110.160 |
| Junction Prospect | Lead, Barium-Barite | Barite, Galena | Occurrence | 32.871, -110.309 |
| Black Rock Group | Manganese | Barite, Galena, Hematite, Malachite, Pyrolusite, Siderite | Occurrence | 33.083, -110.438 |
| Little Mule Group | Silver, Barium-Barite | Barite, Silver | Past Producer | 33.020, -110.366 |
| Twilight and Grey Claims | Beryllium | Beryl, Mica | Occurrence | 32.656, -109.965 |
| Dos Pobres Mine | Copper | Bornite, Chalcocite, Chalcopyrite, Chrysocolla, Molybdenite, Pyrite | Unknown | 32.961, -109.675 |
| Friend Mine | Copper | Bornite, Chalcocite, Chalcopyrite, Cuprite, Hematite, Malachite | Past Producer | 33.036, -110.390 |
| Safford Mine | Copper | Bornite, Chalcopyrite, Chalcocite, Chrysocolla, Curite, Malachite, Molybdenite, Pyrite | Producer | 32.947, -109.654 |
| Silver Spar Prospect | Copper | Bornite, Malachite | Past Producer | 33.017, -110.366 |
| Safford Well | Halite, Bromine | Brine, Halite | Occurrence | 32.795, -109.656 |
Fossil collections
The Paleobiology Database lists 13 fossil collection records in Graham County. These are research records, not public dig sites.
Nearby counties
Pinal County · Greenlee County · Gila County · Cochise County · Pima County
Arizona mineral guides
- Beryl in Arizona
- Tourmaline in Arizona
- Quartz in Arizona
- Garnet in Arizona
- Gold in Arizona
- Mica in Arizona
Back to all Arizona counties.
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