RockWoofFound alongside
Feldspar
Mohs 6–6.5. Blocky crystals with flat cleavage faces. Mindat
16 sites
Pyrite
Mohs 6–6.5. Brassy “fool’s gold,” often cubic. Mindat
8 sites
Quartz
Mohs 7. Six-sided points; smoky quartz is NH’s state gem. Mindat
6 sites
Fluorite
Mohs 4. Cubes in purple, green or yellow; many glow under UV. Mindat
5 sites
Galena
Mohs 2.5–2.75. Heavy, silvery lead ore that breaks into cubes. Mindat
4 sites
Tourmaline
Mohs 7–7.5. Long striated crystals, often black (schorl) or green and pink (elbaite). Mindat
2 sites
Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.
By county
Ste. Genevieve County (5) · Iron County (4) · Newton County (3) · Shannon County (2) · Jasper County (1) · Howell County (1)
Sites
| Site | Commodity | Minerals recorded | Status | Approx. location |
|---|---|---|---|---|
| Pilot Knob | Iron | Magnetite | Prospect | 37.619, -90.633 |
| Granby Ore Block 33 | — | — | Past Producer | 36.897, -94.262 |
| Thorny Mountain Mine | — | — | Prospect | 37.105, -91.182 |
| Pilot Knob Pellet Comp. Mine/Plant | — | — | Producer | 37.619, -90.633 |
| Unknown - Feldspar | Feldspar | — | Past Producer | 37.836, -90.287 |
| Pratte Diggings | Feldspar | — | Past Producer | 37.850, -90.226 |
| Granby Ore Block 25 | — | — | Past Producer | 36.893, -94.273 |
| Sheahan Granite Quarry | — | — | Past Producer | 37.669, -90.682 |
| Niedringhaus Deposit | Feldspar | — | Past Producer | 37.828, -90.230 |
| Dobschutz Diggings | Feldspar | — | Past Producer | 37.843, -90.250 |
| Biser Diggings | Feldspar, Iron | — | Past Producer | 37.494, -90.636 |
| Horner Mountain Mine | — | — | Past Producer | 37.089, -91.249 |
| St. Louis Lease | — | — | Past Producer | 37.105, -94.557 |
| Rex Mine | Zinc | — | Past Producer | 36.628, -92.064 |
| Granby Ore Block 116 | — | — | Past Producer | 36.892, -94.263 |
| Unknown - Feldspar | Feldspar | — | Prospect | 37.845, -90.262 |
Back to Rockhounding in Missouri.
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 USGS ceased systematic updates to MRDS around 2011, so status and details may be out of date.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