RockWoofSketch map
Woof’s favorite find
Clear Springs
We picked it because its USGS record mentions 2 gem or collectible minerals (Quartz, Fluorite) and 2 of our card minerals overall. That ties with 28 other site(s), so we broke the tie by mine status (past producers first), then USGS record quality, then name. USGS lists it as past producer for Phosphorus-Phosphates. Minerals mentioned: Quartz, Fluorite. Approx. location 27.866, -81.814. 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?
Was producing when the record was made.
A processing plant site.
Explored or test-dug, with no recorded production.
Produced ore or material at some point in the past.
Status not recorded.
The mineral was noted here, without development.
Status terms come from USGS MRDS records.
Mineral cards
Fluorite
Mohs 4. Cubes in purple, green or yellow; many glow under UV. Mindat
40 sites
Quartz
Mohs 7. Six-sided points; smoky quartz is NH’s state gem. Mindat
30 sites
Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.
Minerals recorded here
Collophane 29Sand 1Commodities
Phosphorus-Phosphates 73Sand 24Diatomite 9Fluorine-Fluorite 2Uranium 2Sites (first 40)
| Site | Commodity | Minerals recorded | Status | Approx. location |
|---|---|---|---|---|
| Haynesworth Mine (Imc-Agrico) (Amer. Cyanamid) | Phosphorus-Phosphates | Collophane | Prospect | 27.700, -82.017 |
| Cargill Firtilizer - South Ft. Meade | Phosphorus-Phosphates | Collophane | Producer | 27.667, -81.757 |
| Imc Agrico - Payne Creek | Phosphorus-Phosphates | Collophane | Producer | 27.684, -81.950 |
| Fort Meade Mine - Cargill | Phosphorus-Phosphates | Collophane | Producer | 27.734, -81.847 |
| Nichols Mine | Phosphorus-Phosphates | Collophane | Past Producer | 27.895, -82.035 |
| Fort Green Mine | Phosphorus-Phosphates | Collophane | Producer | 27.670, -82.010 |
| Noralyn/Phosphoria | Phosphorus-Phosphates | Collophane | Past Producer | 27.845, -81.865 |
| Polk County Mine | Phosphorus-Phosphates | Collophane | Past Producer | 27.859, -81.981 |
| Clear Springs | Phosphorus-Phosphates | Collophane | Past Producer | 27.866, -81.814 |
| Kingsford Mine | Phosphorus-Phosphates | Collophane | Producer | 27.834, -81.998 |
| Fort Meade Mine Gardinier | Phosphorus-Phosphates | Collophane | Producer | 27.687, -81.847 |
| Silver City Mine | Phosphorus-Phosphates | Collophane | Producer | 27.800, -81.899 |
| Clear Springs Mine | Phosphorus-Phosphates | Collophane | Producer | 27.853, -81.808 |
| Imc Agrico - New Wales | Phosphorus-Phosphates | Collophane | Producer | 27.834, -82.050 |
| Fort Meade Mine Mobil | Phosphorus-Phosphates | Collophane | Producer | 27.789, -81.797 |
| Hookers Prairie Mine | Phosphorus-Phosphates | Collophane | Producer | 27.781, -81.950 |
| Payne Creek-Palmetto Mine | Phosphorus-Phosphates | Collophane | Producer | 27.695, -81.939 |
| Noralyn/Phosphoria Mines | Phosphorus-Phosphates | Collophane | Producer | 27.825, -81.900 |
| Rockland Mine | Phosphorus-Phosphates | Collophane | Producer | 27.758, -81.867 |
| Saddle Creek-Ebersbach Mine | Phosphorus-Phosphates | Collophane | Past Producer | 28.033, -81.834 |
| Watson Mine | Phosphorus-Phosphates | Collophane | Producer | 27.725, -81.811 |
| Watson | Phosphorus-Phosphates | Collophane | Prospect | 27.734, -81.817 |
| Stuart Tract | Phosphorus-Phosphates | Collophane | Prospect | 27.750, -81.933 |
| Saddle Creek (The Williams Co.) | Phosphorus-Phosphates | Collophane | Prospect | 28.034, -81.833 |
| Rockland Mine (Us Agri-Chem) | Phosphorus-Phosphates | Collophane | Prospect | 27.750, -81.867 |
| Phosphoria | Phosphorus-Phosphates | Collophane | Prospect | 27.800, -81.900 |
| Bonny Lake Mine (Seminole Fert.) | Phosphorus-Phosphates | Collophane | Producer | 27.900, -81.917 |
| Haynesworth Mine | Phosphorus-Phosphates | Collophane | Producer | 27.767, -82.014 |
| Imc Agrico - Pebbledale | Phosphorus-Phosphates | Collophane | Producer | 27.834, -81.967 |
| Anchor Investment - Fair-Anchor Mine | Sand | Sand | Unknown | 28.119, -81.938 |
| Fort Meade Mine Mobil | Phosphorus-Phosphates, Fluorine-Fluorite, Uranium | — | Prospect | 27.784, -81.800 |
| Silver City | Phosphorus-Phosphates, Fluorine-Fluorite, Uranium | — | Prospect | 27.800, -81.900 |
| Ridgewood Mine | — | — | Producer | 27.897, -81.920 |
| Pierce Drying Plant | Phosphorus-Phosphates | — | Plant | 27.838, -81.976 |
| Bonny Lake Mine | Phosphorus-Phosphates | — | Plant | 27.906, -81.920 |
| Mulberry | Phosphorus-Phosphates | — | Past Producer | 27.903, -81.950 |
| Unnamed Diatomite Prospect | Diatomite | — | Prospect | 28.020, -81.637 |
| Unnamed Diatomite Deposit | Diatomite | — | Occurrence | 27.959, -81.636 |
| Debris Deposits | Phosphorus-Phosphates | — | Prospect | 27.900, -81.975 |
| Saddle Creek - Ebersbach | Phosphorus-Phosphates | — | Past Producer | 28.033, -81.834 |
Fossil collections
The Paleobiology Database lists 62 fossil collection records in Polk County. These are research records, not public dig sites.
Nearby counties
Hillsborough County · Hardee County · Manatee County · Highlands County · Lake County
Florida mineral guides
Back to all Florida 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